220120010020 has 48 divisors (see below), whose sum is σ = 478369539648. Its totient is φ = 85014334080.

The previous prime is 220120009987. The next prime is 220120010023. The reversal of 220120010020 is 20010021022.

It is a super-2 number, since 2×220120010020² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 220120009979 and 220120010006.

It is not an unprimeable number, because it can be changed into a prime (220120010023) 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, 1038402 + ... + 1232281.

It is an arithmetic number, because the mean of its divisors is an integer number (9966032076).

Almost surely, 2^220120010020 is an apocalyptic number.

220120010020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220120010020 is an abundant number, since it is smaller than the sum of its proper divisors (258249529628).

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

220120010020 is a wasteful number, since it uses less digits than its factorization.

220120010020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2270860 (or 2270858 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 220120010020 its reverse (20010021022), we get a palindrome (240130031042).

The spelling of 220120010020 in words is "two hundred twenty billion, one hundred twenty million, ten thousand, twenty".