2221010111321 has 16 divisors (see below), whose sum is σ = 2266968177936. Its totient is φ = 2175204734976.

The previous prime is 2221010111297. The next prime is 2221010111339. The reversal of 2221010111321 is 1231110101222.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 33465580096 + 2187544531225 = 182936^2 + 1479035^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221010111321 - 2²² = 2221005917017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2221010111321.

It is not an unprimeable number, because it can be changed into a prime (2221010111371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102278561 + ... + 102300273.

It is an arithmetic number, because the mean of its divisors is an integer number (141685511121).

Almost surely, 2^{2221010111321} is an apocalyptic number.

It is an amenable number.

2221010111321 is a deficient number, since it is larger than the sum of its proper divisors (45958066615).

2221010111321 is a wasteful number, since it uses less digits than its factorization.

2221010111321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25132.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 2221010111321 its reverse (1231110101222), we get a palindrome (3452120212543).

The spelling of 2221010111321 in words is "two trillion, two hundred twenty-one billion, ten million, one hundred eleven thousand, three hundred twenty-one".