21222021022202 has 128 divisors (see below), whose sum is σ = 42923633840640. Its totient is φ = 7599687920640.

The previous prime is 21222021022199. The next prime is 21222021022261. The reversal of 21222021022202 is 20222012022212.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1062525488 + ... + 1062545460.

It is an arithmetic number, because the mean of its divisors is an integer number (335340889380).

Almost surely, 2^{21222021022202} is an apocalyptic number.

21222021022202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21222021022202 is an abundant number, since it is smaller than the sum of its proper divisors (21701612818438).

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

21222021022202 is a wasteful number, since it uses less digits than its factorization.

21222021022202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22248.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 21222021022202 its reverse (20222012022212), we get a palindrome (41444033044414).

The spelling of 21222021022202 in words is "twenty-one trillion, two hundred twenty-two billion, twenty-one million, twenty-two thousand, two hundred two".