102120111222020 has 48 divisors (see below), whose sum is σ = 223833966547968. Its totient is φ = 39061963966080.

The previous prime is 102120111222011. The next prime is 102120111222049. The reversal of 102120111222020 is 20222111021201.

It is a self number, because there is not a number n which added to its sum of digits gives 102120111222020.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26846996 + ... + 30413835.

It is an arithmetic number, because the mean of its divisors is an integer number (4663207636416).

Almost surely, 2^{102120111222020} is an apocalyptic number.

102120111222020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102120111222020 is an abundant number, since it is smaller than the sum of its proper divisors (121713855325948).

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

102120111222020 is a wasteful number, since it uses less digits than its factorization.

102120111222020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57264740 (or 57264738 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 102120111222020 its reverse (20222111021201), we get a palindrome (122342222243221).

The spelling of 102120111222020 in words is "one hundred two trillion, one hundred twenty billion, one hundred eleven million, two hundred twenty-two thousand, twenty".