20312122133 has 8 divisors (see below), whose sum is σ = 20809414080. Its totient is φ = 19814919520.

The previous prime is 20312122097. The next prime is 20312122139. The reversal of 20312122133 is 33122121302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20312122133 - 2²⁴ = 20295344917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312122139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 838688 + ... + 862566.

It is an arithmetic number, because the mean of its divisors is an integer number (2601176760).

Almost surely, 2^20312122133 is an apocalyptic number.

It is an amenable number.

20312122133 is a deficient number, since it is larger than the sum of its proper divisors (497291947).

20312122133 is a wasteful number, since it uses less digits than its factorization.

20312122133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44667.

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

Adding to 20312122133 its reverse (33122121302), we get a palindrome (53434243435).

The spelling of 20312122133 in words is "twenty billion, three hundred twelve million, one hundred twenty-two thousand, one hundred thirty-three".