212112120102 has 64 divisors (see below), whose sum is σ = 442400037120. Its totient is φ = 67716383616.

The previous prime is 212112120089. The next prime is 212112120109. The reversal of 212112120102 is 201021211212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212112120109) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10931253 + ... + 10950639.

It is an arithmetic number, because the mean of its divisors is an integer number (6912500580).

Almost surely, 2^212112120102 is an apocalyptic number.

212112120102 is an abundant number, since it is smaller than the sum of its proper divisors (230287917018).

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

212112120102 is a wasteful number, since it uses less digits than its factorization.

212112120102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19925.

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

Adding to 212112120102 its reverse (201021211212), we get a palindrome (413133331314).

The spelling of 212112120102 in words is "two hundred twelve billion, one hundred twelve million, one hundred twenty thousand, one hundred two".