21022414400220 has 96 divisors (see below), whose sum is σ = 58997282093568. Its totient is φ = 5593169041152.

The previous prime is 21022414400191. The next prime is 21022414400227. The reversal of 21022414400220 is 2200441422012.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022414400227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 209455369 + ... + 209555711.

It is an arithmetic number, because the mean of its divisors is an integer number (614555021808).

Almost surely, 2^{21022414400220} is an apocalyptic number.

21022414400220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21022414400220 is an abundant number, since it is smaller than the sum of its proper divisors (37974867693348).

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

21022414400220 is a wasteful number, since it uses less digits than its factorization.

21022414400220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108299 (or 108297 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 21022414400220 its reverse (2200441422012), we get a palindrome (23222855822232).

The spelling of 21022414400220 in words is "twenty-one trillion, twenty-two billion, four hundred fourteen million, four hundred thousand, two hundred twenty".