1222443164465 has 16 divisors (see below), whose sum is σ = 1506874425168. Its totient is φ = 951336493056.

The previous prime is 1222443164401. The next prime is 1222443164479. The reversal of 1222443164465 is 5644613442221.

It can be written as a sum of positive squares in 8 ways, for example, as 79092000289 + 1143351164176 = 281233^2 + 1069276^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222443164465 - 2⁶ = 1222443164401 is a prime.

It is a Duffinian 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, 299729 + ... + 1592081.

It is an arithmetic number, because the mean of its divisors is an integer number (94179651573).

Almost surely, 2^{1222443164465} is an apocalyptic number.

It is an amenable number.

1222443164465 is a deficient number, since it is larger than the sum of its proper divisors (284431260703).

1222443164465 is a wasteful number, since it uses less digits than its factorization.

1222443164465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1297508.

The product of its digits is 1105920, while the sum is 44.

The spelling of 1222443164465 in words is "one trillion, two hundred twenty-two billion, four hundred forty-three million, one hundred sixty-four thousand, four hundred sixty-five".