220121202222020 has 96 divisors (see below), whose sum is σ = 534226144870656. Its totient is φ = 75295374336000.

The previous prime is 220121202222011. The next prime is 220121202222073. The reversal of 220121202222020 is 20222202121022.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 220121202221983 and 220121202222001.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8706656 + ... + 22716695.

It is an arithmetic number, because the mean of its divisors is an integer number (5564855675736).

Almost surely, 2^{220121202222020} is an apocalyptic number.

220121202222020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220121202222020 is an abundant number, since it is smaller than the sum of its proper divisors (314104942648636).

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

220121202222020 is a wasteful number, since it uses less digits than its factorization.

220121202222020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31425261 (or 31425259 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 220121202222020 its reverse (20222202121022), we get a palindrome (240343404343042).

The spelling of 220121202222020 in words is "two hundred twenty trillion, one hundred twenty-one billion, two hundred two million, two hundred twenty-two thousand, twenty".