21301220013222 has 64 divisors (see below), whose sum is σ = 44864433561024. Its totient is φ = 6733476034560.

The previous prime is 21301220013173. The next prime is 21301220013233. The reversal of 21301220013222 is 22231002210312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8269608 + ... + 10535124.

It is an arithmetic number, because the mean of its divisors is an integer number (701006774391).

Almost surely, 2^{21301220013222} is an apocalyptic number.

21301220013222 is an abundant number, since it is smaller than the sum of its proper divisors (23563213547802).

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

21301220013222 is a wasteful number, since it uses less digits than its factorization.

21301220013222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2266633.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21301220013222 its reverse (22231002210312), we get a palindrome (43532222223534).

The spelling of 21301220013222 in words is "twenty-one trillion, three hundred one billion, two hundred twenty million, thirteen thousand, two hundred twenty-two".