21000222120022 has 16 divisors (see below), whose sum is σ = 31579742368512. Its totient is φ = 10473642748800.

The previous prime is 21000222119963. The next prime is 21000222120023. The reversal of 21000222120022 is 22002122200012.

It is a super-2 number, since 2×21000222120022² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21000222119978 and 21000222120005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21000222120023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31025788 + ... + 31695424.

It is an arithmetic number, because the mean of its divisors is an integer number (1973733898032).

Almost surely, 2^{21000222120022} is an apocalyptic number.

21000222120022 is a deficient number, since it is larger than the sum of its proper divisors (10579520248490).

21000222120022 is a wasteful number, since it uses less digits than its factorization.

21000222120022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709143.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 21000222120022 its reverse (22002122200012), we get a palindrome (43002344320034).

The spelling of 21000222120022 in words is "twenty-one trillion, two hundred twenty-two million, one hundred twenty thousand, twenty-two".