212021132112 has 30 divisors (see below), whose sum is σ = 593364696522. Its totient is φ = 70673710656.

The previous prime is 212021132033. The next prime is 212021132123. The reversal of 212021132112 is 211231120212.

212021132112 is a `hidden beast` number, since 2 + 120 + 211 + 321 + 12 = 666.

It can be written as a sum of positive squares in only one way, i.e., 196571636496 + 15449495616 = 443364^2 + 124296^2 .

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 5 ways as a sum of consecutive naturals, for example, 736184343 + ... + 736184630.

Almost surely, 2^212021132112 is an apocalyptic number.

It is an amenable number.

212021132112 is an abundant number, since it is smaller than the sum of its proper divisors (381343564410).

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

212021132112 is a wasteful number, since it uses less digits than its factorization.

212021132112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472368987 (or 1472368978 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 212021132112 its reverse (211231120212), we get a palindrome (423252252324).

The spelling of 212021132112 in words is "two hundred twelve billion, twenty-one million, one hundred thirty-two thousand, one hundred twelve".