212121322022331 has 24 divisors (see below), whose sum is σ = 324450740259360. Its totient is φ = 133083466926336.

The previous prime is 212121322022249. The next prime is 212121322022339. The reversal of 212121322022331 is 133220223121212.

212121322022331 is a `hidden beast` number, since 2 + 1 + 2 + 1 + 2 + 1 + 322 + 0 + 2 + 2 + 331 = 666.

It is not a de Polignac number, because 212121322022331 - 2¹³ = 212121322014139 is a prime.

It is a super-2 number, since 2×212121322022331² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212121322022295 and 212121322022304.

It is not an unprimeable number, because it can be changed into a prime (212121322022339) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62211871 + ... + 65532888.

It is an arithmetic number, because the mean of its divisors is an integer number (13518780844140).

Almost surely, 2^{212121322022331} is an apocalyptic number.

212121322022331 is a deficient number, since it is larger than the sum of its proper divisors (112329418237029).

212121322022331 is a wasteful number, since it uses less digits than its factorization.

212121322022331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127755635 (or 127755632 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 212121322022331 its reverse (133220223121212), we get a palindrome (345341545143543).

The spelling of 212121322022331 in words is "two hundred twelve trillion, one hundred twenty-one billion, three hundred twenty-two million, twenty-two thousand, three hundred thirty-one".