212232153 has 16 divisors (see below), whose sum is σ = 324371840. Its totient is φ = 120911616.

The previous prime is 212232149. The next prime is 212232211. The reversal of 212232153 is 351232212.

It is not a de Polignac number, because 212232153 - 2² = 212232149 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212232103) 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, 7918 + ... + 22071.

It is an arithmetic number, because the mean of its divisors is an integer number (20273240).

Almost surely, 2^212232153 is an apocalyptic number.

It is an amenable number.

212232153 is a deficient number, since it is larger than the sum of its proper divisors (112139687).

212232153 is a wasteful number, since it uses less digits than its factorization.

212232153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30336.

The product of its digits is 720, while the sum is 21.

The square root of 212232153 is about 14568.1897640029. The cubic root of 212232153 is about 596.4907682797.

Adding to 212232153 its reverse (351232212), we get a palindrome (563464365).

The spelling of 212232153 in words is "two hundred twelve million, two hundred thirty-two thousand, one hundred fifty-three".