20133213013123 has 12 divisors (see below), whose sum is σ = 23420555815752. Its totient is φ = 17256827797440.

The previous prime is 20133213013061. The next prime is 20133213013183. The reversal of 20133213013123 is 32131031233102.

It is a de Polignac number, because none of the positive numbers 2^k-20133213013123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20133213013183) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1575003 + ... + 6538123.

It is an arithmetic number, because the mean of its divisors is an integer number (1951712984646).

Almost surely, 2^{20133213013123} is an apocalyptic number.

20133213013123 is a deficient number, since it is larger than the sum of its proper divisors (3287342802629).

20133213013123 is an equidigital number, since it uses as much as digits as its factorization.

20133213013123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5045922 (or 5045915 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 20133213013123 its reverse (32131031233102), we get a palindrome (52264244246225).

The spelling of 20133213013123 in words is "twenty trillion, one hundred thirty-three billion, two hundred thirteen million, thirteen thousand, one hundred twenty-three".