20331200121104 has 20 divisors (see below), whose sum is σ = 39679230897564. Its totient is φ = 10091398599168.

The previous prime is 20331200121079. The next prime is 20331200121109. The reversal of 20331200121104 is 40112100213302.

It can be written as a sum of positive squares in 2 ways, for example, as 7192373059600 + 13138827061504 = 2681860^2 + 3624752^2 .

It is not an unprimeable number, because it can be changed into a prime (20331200121109) 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, 4637589077 + ... + 4637593460.

Almost surely, 2^{20331200121104} is an apocalyptic number.

It is an amenable number.

20331200121104 is a deficient number, since it is larger than the sum of its proper divisors (19348030776460).

20331200121104 is a wasteful number, since it uses less digits than its factorization.

20331200121104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9275182682 (or 9275182676 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 20331200121104 its reverse (40112100213302), we get a palindrome (60443300334406).

The spelling of 20331200121104 in words is "twenty trillion, three hundred thirty-one billion, two hundred million, one hundred twenty-one thousand, one hundred four".