21122202012022 has 64 divisors (see below), whose sum is σ = 34552502424000. Its totient is φ = 9645799016448.

The previous prime is 21122202012011. The next prime is 21122202012059. The reversal of 21122202012022 is 22021020222112.

It is a super-2 number, since 2×21122202012022² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 4466523754 + ... + 4466528482.

It is an arithmetic number, because the mean of its divisors is an integer number (539882850375).

Almost surely, 2^{21122202012022} is an apocalyptic number.

21122202012022 is a deficient number, since it is larger than the sum of its proper divisors (13430300411978).

21122202012022 is a wasteful number, since it uses less digits than its factorization.

21122202012022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9985.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 21122202012022 its reverse (22021020222112), we get a palindrome (43143222234134).

The spelling of 21122202012022 in words is "twenty-one trillion, one hundred twenty-two billion, two hundred two million, twelve thousand, twenty-two".