212021022202112 has 18 divisors (see below), whose sum is σ = 423213837286758. Its totient is φ = 106010511100928.

The previous prime is 212021022202111. The next prime is 212021022202117. The reversal of 212021022202112 is 211202220120212.

It can be written as a sum of positive squares in only one way, i.e., 114697588412416 + 97323433789696 = 10709696^2 + 9865264^2 .

It is not an unprimeable number, because it can be changed into a prime (212021022202111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 414103558733 + ... + 414103559244.

Almost surely, 2^{212021022202112} is an apocalyptic number.

It is an amenable number.

212021022202112 is a deficient number, since it is larger than the sum of its proper divisors (211192815084646).

212021022202112 is an frugal number, since it uses more digits than its factorization.

212021022202112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828207117993 (or 828207117979 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 212021022202112 its reverse (211202220120212), we get a palindrome (423223242322324).

The spelling of 212021022202112 in words is "two hundred twelve trillion, twenty-one billion, twenty-two million, two hundred two thousand, one hundred twelve".