20331121002 has 32 divisors (see below), whose sum is σ = 42332371200. Its totient is φ = 6501663168.

The previous prime is 20331121001. The next prime is 20331121043. The reversal of 20331121002 is 20012113302.

It is not an unprimeable number, because it can be changed into a prime (20331121001) 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, 344802 + ... + 399437.

It is an arithmetic number, because the mean of its divisors is an integer number (1322886600).

Almost surely, 2^20331121002 is an apocalyptic number.

20331121002 is an abundant number, since it is smaller than the sum of its proper divisors (22001250198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20331121002 is a wasteful number, since it uses less digits than its factorization.

20331121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744430.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20331121002 its reverse (20012113302), we get a palindrome (40343234304).

The spelling of 20331121002 in words is "twenty billion, three hundred thirty-one million, one hundred twenty-one thousand, two".