3111221245 has 16 divisors (see below), whose sum is σ = 4172212800. Its totient is φ = 2207516800.

The previous prime is 3111221173. The next prime is 3111221299. The reversal of 3111221245 is 5421221113.

It is not a de Polignac number, because 3111221245 - 2²³ = 3102832637 is a prime.

It is a congruent 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, 687595 + ... + 692104.

It is an arithmetic number, because the mean of its divisors is an integer number (260763300).

Almost surely, 2^3111221245 is an apocalyptic number.

It is an amenable number.

3111221245 is a deficient number, since it is larger than the sum of its proper divisors (1060991555).

3111221245 is a wasteful number, since it uses less digits than its factorization.

3111221245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379756.

The product of its digits is 480, while the sum is 22.

The square root of 3111221245 is about 55778.3223573460. The cubic root of 3111221245 is about 1459.8569392882.

Adding to 3111221245 its reverse (5421221113), we get a palindrome (8532442358).

The spelling of 3111221245 in words is "three billion, one hundred eleven million, two hundred twenty-one thousand, two hundred forty-five".