13231101021 has 16 divisors (see below), whose sum is σ = 18138478848. Its totient is φ = 8573817600.

The previous prime is 13231101011. The next prime is 13231101061. The reversal of 13231101021 is 12010113231.

It is a happy number.

It is not a de Polignac number, because 13231101021 - 2¹³ = 13231092829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231101011) 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, 165136 + ... + 231801.

It is an arithmetic number, because the mean of its divisors is an integer number (1133654928).

Almost surely, 2^13231101021 is an apocalyptic number.

It is an amenable number.

13231101021 is a deficient number, since it is larger than the sum of its proper divisors (4907377827).

13231101021 is a wasteful number, since it uses less digits than its factorization.

13231101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397252.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 13231101021 its reverse (12010113231), we get a palindrome (25241214252).

The spelling of 13231101021 in words is "thirteen billion, two hundred thirty-one million, one hundred one thousand, twenty-one".