20124102220 has 24 divisors (see below), whose sum is σ = 42311750544. Its totient is φ = 8039900736.

The previous prime is 20124102169. The next prime is 20124102227. The reversal of 20124102220 is 2220142102.

It is a super-2 number, since 2×20124102220² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20124102194 and 20124102203.

It is not an unprimeable number, because it can be changed into a prime (20124102227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 591807 + ... + 624886.

It is an arithmetic number, because the mean of its divisors is an integer number (1762989606).

Almost surely, 2^20124102220 is an apocalyptic number.

20124102220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20124102220 is an abundant number, since it is smaller than the sum of its proper divisors (22187648324).

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

20124102220 is a wasteful number, since it uses less digits than its factorization.

20124102220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217529 (or 1217527 counting only the distinct ones).

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

Adding to 20124102220 its reverse (2220142102), we get a palindrome (22344244322).

The spelling of 20124102220 in words is "twenty billion, one hundred twenty-four million, one hundred two thousand, two hundred twenty".