3111221123 has 8 divisors (see below), whose sum is σ = 3234684000. Its totient is φ = 2988836928.

The previous prime is 3111221107. The next prime is 3111221147. The reversal of 3111221123 is 3211221113.

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

It is a cyclic number.

It is not a de Polignac number, because 3111221123 - 2⁴ = 3111221107 is a prime.

It is a super-2 number, since 2×3111221123² = 19359393752402762258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3111221173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263786 + ... + 275327.

It is an arithmetic number, because the mean of its divisors is an integer number (404335500).

Almost surely, 2^3111221123 is an apocalyptic number.

3111221123 is a deficient number, since it is larger than the sum of its proper divisors (123462877).

3111221123 is a wasteful number, since it uses less digits than its factorization.

3111221123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539341.

The product of its digits is 72, while the sum is 17.

The square root of 3111221123 is about 55778.3212637311. The cubic root of 3111221123 is about 1459.8569202065.

Adding to 3111221123 its reverse (3211221113), we get a palindrome (6322442236).

The spelling of 3111221123 in words is "three billion, one hundred eleven million, two hundred twenty-one thousand, one hundred twenty-three".