231322101021 has 48 divisors (see below), whose sum is σ = 398844230400. Its totient is φ = 131948403840.

The previous prime is 231322101001. The next prime is 231322101067. The reversal of 231322101021 is 120101223132.

231322101021 is a `hidden beast` number, since 231 + 322 + 10 + 102 + 1 = 666.

It is not a de Polignac number, because 231322101021 - 2²¹ = 231320003869 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231322100985 and 231322101003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231322101001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2026981 + ... + 2138058.

It is an arithmetic number, because the mean of its divisors is an integer number (8309254800).

Almost surely, 2^231322101021 is an apocalyptic number.

It is an amenable number.

231322101021 is a deficient number, since it is larger than the sum of its proper divisors (167522129379).

231322101021 is a wasteful number, since it uses less digits than its factorization.

231322101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4165087 (or 4165070 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 231322101021 its reverse (120101223132), we get a palindrome (351423324153).

The spelling of 231322101021 in words is "two hundred thirty-one billion, three hundred twenty-two million, one hundred one thousand, twenty-one".