220120221020 has 24 divisors (see below), whose sum is σ = 528288530784. Its totient is φ = 75469790016.

The previous prime is 220120220987. The next prime is 220120221047. The reversal of 220120221020 is 20122021022.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 220120220986 and 220120221004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 786143507 + ... + 786143786.

It is an arithmetic number, because the mean of its divisors is an integer number (22012022116).

Almost surely, 2^220120221020 is an apocalyptic number.

220120221020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220120221020 is an abundant number, since it is smaller than the sum of its proper divisors (308168309764).

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

220120221020 is a wasteful number, since it uses less digits than its factorization.

220120221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1572287309 (or 1572287307 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 220120221020 its reverse (20122021022), we get a palindrome (240242242042).

It can be divided in two parts, 2201202 and 21020, that added together give a palindrome (2222222).

The spelling of 220120221020 in words is "two hundred twenty billion, one hundred twenty million, two hundred twenty-one thousand, twenty".