20124004012 has 24 divisors (see below), whose sum is σ = 40757480960. Its totient is φ = 8515400400.

The previous prime is 20124004009. The next prime is 20124004049. The reversal of 20124004012 is 21040042102.

It is a super-2 number, since 2×20124004012² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4546614 + ... + 4551037.

Almost surely, 2^20124004012 is an apocalyptic number.

It is an amenable number.

20124004012 is an abundant number, since it is smaller than the sum of its proper divisors (20633476948).

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

20124004012 is a wasteful number, since it uses less digits than its factorization.

20124004012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9097741 (or 9097739 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20124004012 its reverse (21040042102), we get a palindrome (41164046114).

The spelling of 20124004012 in words is "twenty billion, one hundred twenty-four million, four thousand, twelve".