162121655212 has 48 divisors (see below), whose sum is σ = 310530140928. Its totient is φ = 73447974720.

The previous prime is 162121655149. The next prime is 162121655219. The reversal of 162121655212 is 212556121261.

It is not an unprimeable number, because it can be changed into a prime (162121655219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18788043 + ... + 18796669.

It is an arithmetic number, because the mean of its divisors is an integer number (6469377936).

Almost surely, 2^162121655212 is an apocalyptic number.

It is an amenable number.

162121655212 is a deficient number, since it is larger than the sum of its proper divisors (148408485716).

162121655212 is a wasteful number, since it uses less digits than its factorization.

162121655212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10006 (or 10004 counting only the distinct ones).

The product of its digits is 14400, while the sum is 34.

Adding to 162121655212 its reverse (212556121261), we get a palindrome (374677776473).

The spelling of 162121655212 in words is "one hundred sixty-two billion, one hundred twenty-one million, six hundred fifty-five thousand, two hundred twelve".