2021112221022 has 32 divisors (see below), whose sum is σ = 4516174659360. Its totient is φ = 669981948480.

The previous prime is 2021112221021. The next prime is 2021112221053. The reversal of 2021112221022 is 2201222111202.

It is a happy number.

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 = 2021112220986 and 2021112221004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021112221021) 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 15 ways as a sum of consecutive naturals, for example, 103382503 + ... + 103402050.

It is an arithmetic number, because the mean of its divisors is an integer number (141130458105).

Almost surely, 2^{2021112221022} is an apocalyptic number.

2021112221022 is an abundant number, since it is smaller than the sum of its proper divisors (2495062438338).

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

2021112221022 is a wasteful number, since it uses less digits than its factorization.

2021112221022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206784745 (or 206784739 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2021112221022 its reverse (2201222111202), we get a palindrome (4222334332224).

The spelling of 2021112221022 in words is "two trillion, twenty-one billion, one hundred twelve million, two hundred twenty-one thousand, twenty-two".