102111021120 has 112 divisors (see below), whose sum is σ = 330319684800. Its totient is φ = 26715826176.

The previous prime is 102111021119. The next prime is 102111021127. The reversal of 102111021120 is 21120111201.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 102111021096 and 102111021105.

It is not an unprimeable number, because it can be changed into a prime (102111021127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 952570 + ... + 1054329.

It is an arithmetic number, because the mean of its divisors is an integer number (2949282900).

Almost surely, 2^102111021120 is an apocalyptic number.

102111021120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102111021120 is an abundant number, since it is smaller than the sum of its proper divisors (228208663680).

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

102111021120 is a wasteful number, since it uses less digits than its factorization.

102111021120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2006972 (or 2006962 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 102111021120 its reverse (21120111201), we get a palindrome (123231132321).

The spelling of 102111021120 in words is "one hundred two billion, one hundred eleven million, twenty-one thousand, one hundred twenty".