20312120033 has 8 divisors (see below), whose sum is σ = 20376585600. Its totient is φ = 20247690960.

The previous prime is 20312120027. The next prime is 20312120063. The reversal of 20312120033 is 33002121302.

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

It is a cyclic number.

It is not a de Polignac number, because 20312120033 - 2¹² = 20312115937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20312119993 and 20312120020.

It is not an unprimeable number, because it can be changed into a prime (20312120063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1483766 + ... + 1497392.

It is an arithmetic number, because the mean of its divisors is an integer number (2547073200).

Almost surely, 2^20312120033 is an apocalyptic number.

It is an amenable number.

20312120033 is a deficient number, since it is larger than the sum of its proper divisors (64465567).

20312120033 is a wasteful number, since it uses less digits than its factorization.

20312120033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18247.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20312120033 its reverse (33002121302), we get a palindrome (53314241335).

The spelling of 20312120033 in words is "twenty billion, three hundred twelve million, one hundred twenty thousand, thirty-three".