20120031221233 has 4 divisors (see below), whose sum is σ = 20131587817588. Its totient is φ = 20108474624880.

The previous prime is 20120031221177. The next prime is 20120031221281. The reversal of 20120031221233 is 33212213002102.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3325910869264 + 16794120351969 = 1823708^2 + 4098063^2 .

It is a cyclic number.

It is not a de Polignac number, because 20120031221233 - 2¹⁷ = 20120031090161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20120131221233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5778295566 + ... + 5778299047.

It is an arithmetic number, because the mean of its divisors is an integer number (5032896954397).

Almost surely, 2^{20120031221233} is an apocalyptic number.

It is an amenable number.

20120031221233 is a deficient number, since it is larger than the sum of its proper divisors (11556596355).

20120031221233 is a wasteful number, since it uses less digits than its factorization.

20120031221233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11556596354.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 20120031221233 its reverse (33212213002102), we get a palindrome (53332244223335).

The spelling of 20120031221233 in words is "twenty trillion, one hundred twenty billion, thirty-one million, two hundred twenty-one thousand, two hundred thirty-three".