21220010322 has 32 divisors (see below), whose sum is σ = 50067492864. Its totient is φ = 5867283600.

The previous prime is 21220010303. The next prime is 21220010363. The reversal of 21220010322 is 22301002212.

It is a happy 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, 8147704 + ... + 8150307.

It is an arithmetic number, because the mean of its divisors is an integer number (1564609152).

Almost surely, 2^21220010322 is an apocalyptic number.

21220010322 is an abundant number, since it is smaller than the sum of its proper divisors (28847482542).

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

21220010322 is a wasteful number, since it uses less digits than its factorization.

21220010322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16298054.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 21220010322 its reverse (22301002212), we get a palindrome (43521012534).

The spelling of 21220010322 in words is "twenty-one billion, two hundred twenty million, ten thousand, three hundred twenty-two".