102112021212 has 48 divisors (see below), whose sum is σ = 244028467200. Its totient is φ = 33217624512.

The previous prime is 102112021199. The next prime is 102112021213. The reversal of 102112021212 is 212120211201.

It is a junction number, because it is equal to n+sod(n) for n = 102112021191 and 102112021200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102112021213) 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, 62548 + ... + 456219.

It is an arithmetic number, because the mean of its divisors is an integer number (5083926400).

Almost surely, 2^102112021212 is an apocalyptic number.

102112021212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102112021212 is an abundant number, since it is smaller than the sum of its proper divisors (141916445988).

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

102112021212 is a wasteful number, since it uses less digits than its factorization.

102112021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519170 (or 519168 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 102112021212 its reverse (212120211201), we get a palindrome (314232232413).

The spelling of 102112021212 in words is "one hundred two billion, one hundred twelve million, twenty-one thousand, two hundred twelve".