20124042220 has 48 divisors (see below), whose sum is σ = 42864056928. Its totient is φ = 7935080960.

The previous prime is 20124042187. The next prime is 20124042251. The reversal of 20124042220 is 2224042102.

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, 752112 + ... + 778408.

It is an arithmetic number, because the mean of its divisors is an integer number (893001186).

Almost surely, 2^20124042220 is an apocalyptic number.

20124042220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20124042220 is an abundant number, since it is smaller than the sum of its proper divisors (22740014708).

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

20124042220 is a wasteful number, since it uses less digits than its factorization.

20124042220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26850 (or 26848 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 20124042220 its reverse (2224042102), we get a palindrome (22348084322).

The spelling of 20124042220 in words is "twenty billion, one hundred twenty-four million, forty-two thousand, two hundred twenty".