162162021 has 12 divisors (see below), whose sum is σ = 251516832. Its totient is φ = 92663928.

The previous prime is 162161977. The next prime is 162162037. The reversal of 162162021 is 120261261.

162162021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 162162021 - 2¹¹ = 162159973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162162061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 551425 + ... + 551718.

It is an arithmetic number, because the mean of its divisors is an integer number (20959736).

Almost surely, 2^162162021 is an apocalyptic number.

It is an amenable number.

162162021 is a deficient number, since it is larger than the sum of its proper divisors (89354811).

162162021 is a wasteful number, since it uses less digits than its factorization.

162162021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103160 (or 1103153 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 162162021 is about 12734.2852567390. The cubic root of 162162021 is about 545.3178529114.

The spelling of 162162021 in words is "one hundred sixty-two million, one hundred sixty-two thousand, twenty-one".