2021221022202 has 12 divisors (see below), whose sum is σ = 4379312214810. Its totient is φ = 673740340728.

The previous prime is 2021221022201. The next prime is 2021221022231. The reversal of 2021221022202 is 2022201221202.

2021221022202 is a `hidden beast` number, since 20 + 212 + 210 + 2 + 220 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1633030965801 + 388190056401 = 1277901^2 + 623049^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 112290056789 = 2021221022202 / (2 + 0 + 2 + 1 + 2 + 2 + 1 + 0 + 2 + 2 + 2 + 0 + 2).

It is not an unprimeable number, because it can be changed into a prime (2021221022201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 56145028377 + ... + 56145028412.

Almost surely, 2^{2021221022202} is an apocalyptic number.

2021221022202 is an abundant number, since it is smaller than the sum of its proper divisors (2358091192608).

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

2021221022202 is a wasteful number, since it uses less digits than its factorization.

2021221022202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112290056797 (or 112290056794 counting only the distinct ones).

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

Adding to 2021221022202 its reverse (2022201221202), we get a palindrome (4043422243404).

The spelling of 2021221022202 in words is "two trillion, twenty-one billion, two hundred twenty-one million, twenty-two thousand, two hundred two".