3345577952221 has 4 divisors (see below), whose sum is σ = 3345612253852. Its totient is φ = 3345543650592.

The previous prime is 3345577952179. The next prime is 3345577952231. The reversal of 3345577952221 is 1222597755433.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2837759239225 + 507818712996 = 1684565^2 + 712614^2 .

It is a cyclic number.

It is not a de Polignac number, because 3345577952221 - 2¹¹ = 3345577950173 is a prime.

It is a super-2 number, since 2×3345577952221² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3345577952231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17004096 + ... + 17199721.

It is an arithmetic number, because the mean of its divisors is an integer number (836403063463).

Almost surely, 2^{3345577952221} is an apocalyptic number.

It is an amenable number.

3345577952221 is a deficient number, since it is larger than the sum of its proper divisors (34301631).

3345577952221 is an equidigital number, since it uses as much as digits as its factorization.

3345577952221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34301630.

The product of its digits is 15876000, while the sum is 55.

The spelling of 3345577952221 in words is "three trillion, three hundred forty-five billion, five hundred seventy-seven million, nine hundred fifty-two thousand, two hundred twenty-one".