102111102210120 has 64 divisors (see below), whose sum is σ = 307015563600000. Its totient is φ = 27168982192128.

The previous prime is 102111102210119. The next prime is 102111102210137. The reversal of 102111102210120 is 21012201111201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 102111102210120.

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, 947525020 + ... + 947632779.

It is an arithmetic number, because the mean of its divisors is an integer number (4797118181250).

Almost surely, 2^{102111102210120} is an apocalyptic number.

102111102210120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102111102210120 is an abundant number, since it is smaller than the sum of its proper divisors (204904461389880).

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

102111102210120 is a wasteful number, since it uses less digits than its factorization.

102111102210120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1895158262 (or 1895158258 counting only the distinct ones).

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

Adding to 102111102210120 its reverse (21012201111201), we get a palindrome (123123303321321).

The spelling of 102111102210120 in words is "one hundred two trillion, one hundred eleven billion, one hundred two million, two hundred ten thousand, one hundred twenty".