20122021022220 has 240 divisors, whose sum is σ = 68058564301728. Its totient is φ = 4947328834560.

The previous prime is 20122021022179. The next prime is 20122021022231. The reversal of 20122021022220 is 2222012022102.

20122021022220 is a `hidden beast` number, since 201 + 220 + 2 + 1 + 0 + 22 + 220 = 666.

It is a super-2 number, since 2×20122021022220² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20122021022193 and 20122021022202.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 17490975 + ... + 18605865.

Almost surely, 2^{20122021022220} is an apocalyptic number.

20122021022220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20122021022220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34029282150864).

20122021022220 is an abundant number, since it is smaller than the sum of its proper divisors (47936543279508).

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

20122021022220 is a wasteful number, since it uses less digits than its factorization.

20122021022220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115782 (or 1115771 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 20122021022220 its reverse (2222012022102), we get a palindrome (22344033044322).

The spelling of 20122021022220 in words is "twenty trillion, one hundred twenty-two billion, twenty-one million, twenty-two thousand, two hundred twenty".