1232001021331 has 16 divisors (see below), whose sum is σ = 1348627138560. Its totient is φ = 1121774647840.

The previous prime is 1232001021313. The next prime is 1232001021367. The reversal of 1232001021331 is 1331201002321.

It is a cyclic number.

It is not a de Polignac number, because 1232001021331 - 2¹⁷ = 1232000890259 is a prime.

It is a super-2 number, since 2×1232001021331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1232001021299 and 1232001021308.

It is not an unprimeable number, because it can be changed into a prime (1232001021431) 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, 12960235 + ... + 13054948.

It is an arithmetic number, because the mean of its divisors is an integer number (84289196160).

Almost surely, 2^{1232001021331} is an apocalyptic number.

1232001021331 is a deficient number, since it is larger than the sum of its proper divisors (116626117229).

1232001021331 is a wasteful number, since it uses less digits than its factorization.

1232001021331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26015306.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1232001021331 its reverse (1331201002321), we get a palindrome (2563202023652).

The spelling of 1232001021331 in words is "one trillion, two hundred thirty-two billion, one million, twenty-one thousand, three hundred thirty-one".