21021200020222 has 32 divisors (see below), whose sum is σ = 31789609608960. Its totient is φ = 10424801341440.

The previous prime is 21021200020201. The next prime is 21021200020259. The reversal of 21021200020222 is 22202000212012.

It is a junction number, because it is equal to n+sod(n) for n = 21021200020196 and 21021200020205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2182655347 + ... + 2182664977.

It is an arithmetic number, because the mean of its divisors is an integer number (993425300280).

Almost surely, 2^{21021200020222} is an apocalyptic number.

21021200020222 is a deficient number, since it is larger than the sum of its proper divisors (10768409588738).

21021200020222 is a wasteful number, since it uses less digits than its factorization.

21021200020222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15876.

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

Adding to 21021200020222 its reverse (22202000212012), we get a palindrome (43223200232234).

The spelling of 21021200020222 in words is "twenty-one trillion, twenty-one billion, two hundred million, twenty thousand, two hundred twenty-two".