2153212122 has 32 divisors (see below), whose sum is σ = 4339008000. Its totient is φ = 712323248.

The previous prime is 2153212109. The next prime is 2153212123. The reversal of 2153212122 is 2212123512.

It is not an unprimeable number, because it can be changed into a prime (2153212123) 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, 641653 + ... + 644999.

It is an arithmetic number, because the mean of its divisors is an integer number (135594000).

Almost surely, 2^2153212122 is an apocalyptic number.

2153212122 is an abundant number, since it is smaller than the sum of its proper divisors (2185795878).

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

2153212122 is a wasteful number, since it uses less digits than its factorization.

2153212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4130.

The product of its digits is 480, while the sum is 21.

The square root of 2153212122 is about 46402.7167523627. The cubic root of 2153212122 is about 1291.3053153623.

Adding to 2153212122 its reverse (2212123512), we get a palindrome (4365335634).

The spelling of 2153212122 in words is "two billion, one hundred fifty-three million, two hundred twelve thousand, one hundred twenty-two".