20113212013033 has 4 divisors (see below), whose sum is σ = 20762025303808. Its totient is φ = 19464398722260.

The previous prime is 20113212012997. The next prime is 20113212013079. The reversal of 20113212013033 is 33031021231102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20113212013033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20113212012995 and 20113212013013.

It is not an unprimeable number, because it can be changed into a prime (20113212013133) 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, 324406645341 + ... + 324406645402.

It is an arithmetic number, because the mean of its divisors is an integer number (5190506325952).

Almost surely, 2^{20113212013033} is an apocalyptic number.

It is an amenable number.

20113212013033 is a deficient number, since it is larger than the sum of its proper divisors (648813290775).

20113212013033 is an equidigital number, since it uses as much as digits as its factorization.

20113212013033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648813290774.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 20113212013033 its reverse (33031021231102), we get a palindrome (53144233244135).

The spelling of 20113212013033 in words is "twenty trillion, one hundred thirteen billion, two hundred twelve million, thirteen thousand, thirty-three".