20120400033231 has 16 divisors (see below), whose sum is σ = 27207368017920. Its totient is φ = 13223548259040.

The previous prime is 20120400033211. The next prime is 20120400033247. The reversal of 20120400033231 is 13233000402102.

It is not a de Polignac number, because 20120400033231 - 2⁷ = 20120400033103 is a prime.

It is a super-2 number, since 2×20120400033231² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20120400033198 and 20120400033207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120400033211) 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, 1520796 + ... + 6523313.

It is an arithmetic number, because the mean of its divisors is an integer number (1700460501120).

Almost surely, 2^{20120400033231} is an apocalyptic number.

20120400033231 is a deficient number, since it is larger than the sum of its proper divisors (7086967984689).

20120400033231 is a wasteful number, since it uses less digits than its factorization.

20120400033231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8055926.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 20120400033231 its reverse (13233000402102), we get a palindrome (33353400435333).

The spelling of 20120400033231 in words is "twenty trillion, one hundred twenty billion, four hundred million, thirty-three thousand, two hundred thirty-one".