1331232223121 has 16 divisors (see below), whose sum is σ = 1376919840000. Its totient is φ = 1286460130176.

The previous prime is 1331232223043. The next prime is 1331232223147. The reversal of 1331232223121 is 1213222321331.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1331232223121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1331232223021) 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, 443765 + ... + 1690973.

It is an arithmetic number, because the mean of its divisors is an integer number (86057490000).

Almost surely, 2^{1331232223121} is an apocalyptic number.

It is an amenable number.

1331232223121 is a deficient number, since it is larger than the sum of its proper divisors (45687616879).

1331232223121 is a wasteful number, since it uses less digits than its factorization.

1331232223121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247576.

The product of its digits is 2592, while the sum is 26.

Adding to 1331232223121 its reverse (1213222321331), we get a palindrome (2544454544452).

The spelling of 1331232223121 in words is "one trillion, three hundred thirty-one billion, two hundred thirty-two million, two hundred twenty-three thousand, one hundred twenty-one".