21222021233130 has 32 divisors (see below), whose sum is σ = 51065834932224. Its totient is φ = 5644429665216.

The previous prime is 21222021233089. The next prime is 21222021233167. The reversal of 21222021233130 is 3133212022212.

It is a self number, because there is not a number n which added to its sum of digits gives 21222021233130.

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, 923488129 + ... + 923511108.

It is an arithmetic number, because the mean of its divisors is an integer number (1595807341632).

Almost surely, 2^{21222021233130} is an apocalyptic number.

21222021233130 is an abundant number, since it is smaller than the sum of its proper divisors (29843813699094).

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

21222021233130 is a wasteful number, since it uses less digits than its factorization.

21222021233130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1846999630.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 21222021233130 its reverse (3133212022212), we get a palindrome (24355233255342).

The spelling of 21222021233130 in words is "twenty-one trillion, two hundred twenty-two billion, twenty-one million, two hundred thirty-three thousand, one hundred thirty".