102020112120 has 128 divisors (see below), whose sum is σ = 310651200000. Its totient is φ = 26800012800.

The previous prime is 102020112109. The next prime is 102020112149. The reversal of 102020112120 is 21211020201.

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 = 102020112096 and 102020112105.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2390731 + ... + 2433029.

It is an arithmetic number, because the mean of its divisors is an integer number (2426962500).

Almost surely, 2^102020112120 is an apocalyptic number.

102020112120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102020112120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155325600000).

102020112120 is an abundant number, since it is smaller than the sum of its proper divisors (208631087880).

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

102020112120 is a wasteful number, since it uses less digits than its factorization.

102020112120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42613 (or 42609 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 102020112120 its reverse (21211020201), we get a palindrome (123231132321).

The spelling of 102020112120 in words is "one hundred two billion, twenty million, one hundred twelve thousand, one hundred twenty".