10031220420 has 48 divisors (see below), whose sum is σ = 30247990080. Its totient is φ = 2469223296.

The previous prime is 10031220383. The next prime is 10031220421. The reversal of 10031220420 is 2402213001.

It is a super-2 number, since 2×10031220420² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 10031220420.

It is not an unprimeable number, because it can be changed into a prime (10031220421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6429490 + ... + 6431049.

It is an arithmetic number, because the mean of its divisors is an integer number (630166460).

Almost surely, 2^10031220420 is an apocalyptic number.

10031220420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10031220420 is an abundant number, since it is smaller than the sum of its proper divisors (20216769660).

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

10031220420 is a wasteful number, since it uses less digits than its factorization.

10031220420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12860564 (or 12860562 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 10031220420 its reverse (2402213001), we get a palindrome (12433433421).

The spelling of 10031220420 in words is "ten billion, thirty-one million, two hundred twenty thousand, four hundred twenty".