102111011020 has 24 divisors (see below), whose sum is σ = 227046837024. Its totient is φ = 38441792256.

The previous prime is 102111010999. The next prime is 102111011033. The reversal of 102111011020 is 20110111201.

It is a super-2 number, since 2×102111011020² (a number of 23 digits) contains 22 as substring.

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 = 102111010988 and 102111011006.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150162912 + ... + 150163591.

It is an arithmetic number, because the mean of its divisors is an integer number (9460284876).

Almost surely, 2^102111011020 is an apocalyptic number.

102111011020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102111011020 is an abundant number, since it is smaller than the sum of its proper divisors (124935826004).

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

102111011020 is a wasteful number, since it uses less digits than its factorization.

102111011020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300326529 (or 300326527 counting only the distinct ones).

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

Adding to 102111011020 its reverse (20110111201), we get a palindrome (122221122221).

The spelling of 102111011020 in words is "one hundred two billion, one hundred eleven million, eleven thousand, twenty".