2022201221220 has 72 divisors (see below), whose sum is σ = 6299794455864. Its totient is φ = 524679234048.

The previous prime is 2022201221207. The next prime is 2022201221231. The reversal of 2022201221220 is 221221022202.

2022201221220 is a `hidden beast` number, since 2 + 0 + 2 + 220 + 1 + 221 + 220 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 749059092324 + 1273142128896 = 865482^2 + 1128336^2 .

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 = 2022201221193 and 2022201221202.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 151810249 + ... + 151823568.

Almost surely, 2^{2022201221220} is an apocalyptic number.

2022201221220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2022201221220 is an abundant number, since it is smaller than the sum of its proper divisors (4277593234644).

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

2022201221220 is a wasteful number, since it uses less digits than its factorization.

2022201221220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303633869 (or 303633864 counting only the distinct ones).

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

Adding to 2022201221220 its reverse (221221022202), we get a palindrome (2243422243422).

The spelling of 2022201221220 in words is "two trillion, twenty-two billion, two hundred one million, two hundred twenty-one thousand, two hundred twenty".