212012211021012 has 36 divisors (see below), whose sum is σ = 536548032098260. Its totient is φ = 70587887363712.

The previous prime is 212012211020989. The next prime is 212012211021031. The reversal of 212012211021012 is 210120112210212.

212012211021012 is a `hidden beast` number, since 21 + 201 + 221 + 1 + 0 + 210 + 12 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 38624783133456 + 173387427887556 = 6214884^2 + 13167666^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3452037337 + ... + 3452098752.

Almost surely, 2^{212012211021012} is an apocalyptic number.

It is an amenable number.

212012211021012 is an abundant number, since it is smaller than the sum of its proper divisors (324535821077248).

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

212012211021012 is a wasteful number, since it uses less digits than its factorization.

212012211021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6904136952 (or 6904136947 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 212012211021012 its reverse (210120112210212), we get a palindrome (422132323231224).

The spelling of 212012211021012 in words is "two hundred twelve trillion, twelve billion, two hundred eleven million, twenty-one thousand, twelve".