212021011112 has 8 divisors (see below), whose sum is σ = 397539395850. Its totient is φ = 106010505552.

The previous prime is 212021011109. The next prime is 212021011151. The reversal of 212021011112 is 211110120212.

It can be written as a sum of positive squares in only one way, i.e., 169574298436 + 42446712676 = 411794^2 + 206026^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13251313187 + ... + 13251313202.

Almost surely, 2^212021011112 is an apocalyptic number.

It is an amenable number.

212021011112 is a deficient number, since it is larger than the sum of its proper divisors (185518384738).

212021011112 is a wasteful number, since it uses less digits than its factorization.

212021011112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26502626395 (or 26502626391 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 212021011112 its reverse (211110120212), we get a palindrome (423131131324).

The spelling of 212021011112 in words is "two hundred twelve billion, twenty-one million, eleven thousand, one hundred twelve".