22220513240165 has 8 divisors (see below), whose sum is σ = 27314972373528. Its totient is φ = 17342839601920.

The previous prime is 22220513240141. The next prime is 22220513240171. The reversal of 22220513240165 is 56104231502222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1877102765476 + 20343410474689 = 1370074^2 + 4510367^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22220513240165 - 2⁸ = 22220513239909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54196373552 + ... + 54196373961.

It is an arithmetic number, because the mean of its divisors is an integer number (3414371546691).

Almost surely, 2^{22220513240165} is an apocalyptic number.

It is an amenable number.

22220513240165 is a deficient number, since it is larger than the sum of its proper divisors (5094459133363).

22220513240165 is a wasteful number, since it uses less digits than its factorization.

22220513240165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108392747559.

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 22220513240165 its reverse (56104231502222), we get a palindrome (78324744742387).

The spelling of 22220513240165 in words is "twenty-two trillion, two hundred twenty billion, five hundred thirteen million, two hundred forty thousand, one hundred sixty-five".