101111010002020 has 12 divisors (see below), whose sum is σ = 212333121004284. Its totient is φ = 40444404000800.

The previous prime is 101111010001979. The next prime is 101111010002027. The reversal of 101111010002020 is 20200010111101.

It can be written as a sum of positive squares in 2 ways, for example, as 67707488143936 + 33403521858084 = 8228456^2 + 5779578^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 101111010001988 and 101111010002006.

It is not an unprimeable number, because it can be changed into a prime (101111010002027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2527775250031 + ... + 2527775250070.

It is an arithmetic number, because the mean of its divisors is an integer number (17694426750357).

Almost surely, 2^{101111010002020} is an apocalyptic number.

101111010002020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101111010002020 is an abundant number, since it is smaller than the sum of its proper divisors (111222111002264).

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

101111010002020 is a wasteful number, since it uses less digits than its factorization.

101111010002020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5055550500110 (or 5055550500108 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 101111010002020 its reverse (20200010111101), we get a palindrome (121311020113121).

The spelling of 101111010002020 in words is "one hundred one trillion, one hundred eleven billion, ten million, two thousand, twenty".