213232122021 has 32 divisors (see below), whose sum is σ = 297596452608. Its totient is φ = 135550356480.

The previous prime is 213232122007. The next prime is 213232122053. The reversal of 213232122021 is 120221232312.

It is not a de Polignac number, because 213232122021 - 2³⁵ = 178872383653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213232122091) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70209915 + ... + 70212951.

It is an arithmetic number, because the mean of its divisors is an integer number (9299889144).

Almost surely, 2^213232122021 is an apocalyptic number.

It is an amenable number.

213232122021 is a deficient number, since it is larger than the sum of its proper divisors (84364330587).

213232122021 is a wasteful number, since it uses less digits than its factorization.

213232122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5901.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 213232122021 its reverse (120221232312), we get a palindrome (333453354333).

The spelling of 213232122021 in words is "two hundred thirteen billion, two hundred thirty-two million, one hundred twenty-two thousand, twenty-one".