12020001233231 has 4 divisors (see below), whose sum is σ = 12024716811000. Its totient is φ = 12015285655464.

The previous prime is 12020001233221. The next prime is 12020001233299. The reversal of 12020001233231 is 13233210002021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12020001233231 - 2⁶ = 12020001233167 is a prime.

It is a super-2 number, since 2×12020001233231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020001233221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2357785061 + ... + 2357790158.

It is an arithmetic number, because the mean of its divisors is an integer number (3006179202750).

Almost surely, 2^{12020001233231} is an apocalyptic number.

12020001233231 is a deficient number, since it is larger than the sum of its proper divisors (4715577769).

12020001233231 is an equidigital number, since it uses as much as digits as its factorization.

12020001233231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4715577768.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 12020001233231 its reverse (13233210002021), we get a palindrome (25253211235252).

The spelling of 12020001233231 in words is "twelve trillion, twenty billion, one million, two hundred thirty-three thousand, two hundred thirty-one".