20124012412 has 48 divisors (see below), whose sum is σ = 44858499840. Its totient is φ = 7690021632.

The previous prime is 20124012407. The next prime is 20124012439. The reversal of 20124012412 is 21421042102.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 20124012412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1103518 + ... + 1121605.

It is an arithmetic number, because the mean of its divisors is an integer number (934552080).

Almost surely, 2^20124012412 is an apocalyptic number.

It is an amenable number.

20124012412 is an abundant number, since it is smaller than the sum of its proper divisors (24734487428).

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

20124012412 is a wasteful number, since it uses less digits than its factorization.

20124012412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2225170 (or 2225168 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 20124012412 its reverse (21421042102), we get a palindrome (41545054514).

The spelling of 20124012412 in words is "twenty billion, one hundred twenty-four million, twelve thousand, four hundred twelve".