102331120212 has 18 divisors (see below), whose sum is σ = 258670331738. Its totient is φ = 34110373392.

The previous prime is 102331120211. The next prime is 102331120259. The reversal of 102331120212 is 212021133201.

102331120212 is a `hidden beast` number, since 1 + 0 + 2 + 331 + 120 + 212 = 666.

It can be written as a sum of positive squares in only one way, i.e., 101177431056 + 1153689156 = 318084^2 + 33966^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102331120211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1421265523 + ... + 1421265594.

Almost surely, 2^102331120212 is an apocalyptic number.

102331120212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102331120212 is an abundant number, since it is smaller than the sum of its proper divisors (156339211526).

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

102331120212 is a wasteful number, since it uses less digits than its factorization.

102331120212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2842531127 (or 2842531122 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 102331120212 its reverse (212021133201), we get a palindrome (314352253413).

The spelling of 102331120212 in words is "one hundred two billion, three hundred thirty-one million, one hundred twenty thousand, two hundred twelve".