102111120021012 has 96 divisors (see below), whose sum is σ = 247123209338880. Its totient is φ = 32781404903040.

The previous prime is 102111120020977. The next prime is 102111120021037. The reversal of 102111120021012 is 210120021111201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 102111120020982 and 102111120021000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 202751503 + ... + 203254505.

It is an arithmetic number, because the mean of its divisors is an integer number (2574200097280).

Almost surely, 2^{102111120021012} is an apocalyptic number.

102111120021012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102111120021012 is an abundant number, since it is smaller than the sum of its proper divisors (145012089317868).

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

102111120021012 is a wasteful number, since it uses less digits than its factorization.

102111120021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505653 (or 505651 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 102111120021012 its reverse (210120021111201), we get a palindrome (312231141132213).

The spelling of 102111120021012 in words is "one hundred two trillion, one hundred eleven billion, one hundred twenty million, twenty-one thousand, twelve".