20124020412 has 36 divisors (see below), whose sum is σ = 51097184320. Its totient is φ = 6677923392.

The previous prime is 20124020387. The next prime is 20124020437. The reversal of 20124020412 is 21402042102.

It is an interprime number because it is at equal distance from previous prime (20124020387) and next prime (20124020437).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1245337 + ... + 1261392.

Almost surely, 2^20124020412 is an apocalyptic number.

It is an amenable number.

20124020412 is an abundant number, since it is smaller than the sum of its proper divisors (30973163908).

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

20124020412 is a wasteful number, since it uses less digits than its factorization.

20124020412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2506962 (or 2506957 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 20124020412 its reverse (21402042102), we get a palindrome (41526062514).

The spelling of 20124020412 in words is "twenty billion, one hundred twenty-four million, twenty thousand, four hundred twelve".