20012215304 has 32 divisors (see below), whose sum is σ = 38423160000. Its totient is φ = 9767938752.

The previous prime is 20012215273. The next prime is 20012215361. The reversal of 20012215304 is 40351221002.

It is a super-2 number, since 2×20012215304² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34214 + ... + 202965.

It is an arithmetic number, because the mean of its divisors is an integer number (1200723750).

Almost surely, 2^20012215304 is an apocalyptic number.

It is an amenable number.

20012215304 is a deficient number, since it is larger than the sum of its proper divisors (18410944696).

20012215304 is a wasteful number, since it uses less digits than its factorization.

20012215304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237437 (or 237433 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 20012215304 its reverse (40351221002), we get a palindrome (60363436306).

The spelling of 20012215304 in words is "twenty billion, twelve million, two hundred fifteen thousand, three hundred four".