213200122021 has 16 divisors (see below), whose sum is σ = 223157790720. Its totient is φ = 203447629440.

The previous prime is 213200122013. The next prime is 213200122073. The reversal of 213200122021 is 120221002312.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 213200122021 - 2³ = 213200122013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213200121986 and 213200122004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213200122081) 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, 907275 + ... + 1117831.

It is an arithmetic number, because the mean of its divisors is an integer number (13947361920).

Almost surely, 2^213200122021 is an apocalyptic number.

It is an amenable number.

213200122021 is a deficient number, since it is larger than the sum of its proper divisors (9957668699).

213200122021 is a wasteful number, since it uses less digits than its factorization.

213200122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211044.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 213200122021 its reverse (120221002312), we get a palindrome (333421124333).

The spelling of 213200122021 in words is "two hundred thirteen billion, two hundred million, one hundred twenty-two thousand, twenty-one".