102112012020 has 48 divisors (see below), whose sum is σ = 288744478848. Its totient is φ = 26960265600.

The previous prime is 102112012003. The next prime is 102112012021. The reversal of 102112012020 is 20210211201.

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 = 102112011987 and 102112012005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102112012021) 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, 8419024 + ... + 8431143.

It is an arithmetic number, because the mean of its divisors is an integer number (6015509976).

Almost surely, 2^102112012020 is an apocalyptic number.

102112012020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102112012020 is an abundant number, since it is smaller than the sum of its proper divisors (186632466828).

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

102112012020 is a wasteful number, since it uses less digits than its factorization.

102112012020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16850280 (or 16850278 counting only the distinct ones).

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

Adding to 102112012020 its reverse (20210211201), we get a palindrome (122322223221).

The spelling of 102112012020 in words is "one hundred two billion, one hundred twelve million, twelve thousand, twenty".