212120312102 has 32 divisors (see below), whose sum is σ = 328139599392. Its totient is φ = 102780082944.

The previous prime is 212120312083. The next prime is 212120312143. The reversal of 212120312102 is 201213021212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27483548 + ... + 27491264.

It is an arithmetic number, because the mean of its divisors is an integer number (10254362481).

Almost surely, 2^212120312102 is an apocalyptic number.

212120312102 is a deficient number, since it is larger than the sum of its proper divisors (116019287290).

212120312102 is a wasteful number, since it uses less digits than its factorization.

212120312102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10232.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 212120312102 its reverse (201213021212), we get a palindrome (413333333314).

The spelling of 212120312102 in words is "two hundred twelve billion, one hundred twenty million, three hundred twelve thousand, one hundred two".