20133312123 has 16 divisors (see below), whose sum is σ = 27489731456. Its totient is φ = 13100028480.

The previous prime is 20133312107. The next prime is 20133312163. The reversal of 20133312123 is 32121333102.

It is not a de Polignac number, because 20133312123 - 2⁴ = 20133312107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20133312123.

It is not an unprimeable number, because it can be changed into a prime (20133312103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111336 + ... + 229482.

It is an arithmetic number, because the mean of its divisors is an integer number (1718108216).

Almost surely, 2^20133312123 is an apocalyptic number.

20133312123 is a deficient number, since it is larger than the sum of its proper divisors (7356419333).

20133312123 is a wasteful number, since it uses less digits than its factorization.

20133312123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119514.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 20133312123 its reverse (32121333102), we get a palindrome (52254645225).

The spelling of 20133312123 in words is "twenty billion, one hundred thirty-three million, three hundred twelve thousand, one hundred twenty-three".