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10101111102020 = 2252971131699877
BaseRepresentation
bin1001001011111101100100…
…1000111001101001000100
31022202122201210121102111202
42102333121020321221010
52310444033420231040
633252215242522032
72061531643465301
oct222773110715104
938678653542452
1010101111102020
113244947977554
1211717b5806318
135836b8c04c83
1426cc7997c0a8
15127b469a8015
hex92fd9239a44

10101111102020 has 24 divisors (see below), whose sum is σ = 21212417187864. Its totient is φ = 4040428464896.

The previous prime is 10101111102013. The next prime is 10101111102029. The reversal of 10101111102020 is 2020111110101.

It can be written as a sum of positive squares in 4 ways, for example, as 2039463897604 + 8061647204416 = 1428098^2 + 2839304^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10101111101992 and 10101111102010.

It is not an unprimeable number, because it can be changed into a prime (10101111102029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5092322 + ... + 6792198.

It is an arithmetic number, because the mean of its divisors is an integer number (883850716161).

Almost surely, 210101111102020 is an apocalyptic number.

10101111102020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10101111102020 is an abundant number, since it is smaller than the sum of its proper divisors (11111306085844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10101111102020 is a wasteful number, since it uses less digits than its factorization.

10101111102020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996999 (or 1996997 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 10101111102020 its reverse (2020111110101), we get a palindrome (12121222212121).

The spelling of 10101111102020 in words is "ten trillion, one hundred one billion, one hundred eleven million, one hundred two thousand, twenty".

Divisors: 1 2 4 5 10 20 297113 594226 1188452 1485565 1699877 2971130 3399754 5942260 6799508 8499385 16998770 33997540 505055555101 1010111110202 2020222220404 2525277775505 5050555551010 10101111102020