1113111321 has 32 divisors (see below), whose sum is σ = 1764633600. Its totient is φ = 610639680.

The previous prime is 1113111319. The next prime is 1113111331. The reversal of 1113111321 is 1231113111.

It is not a de Polignac number, because 1113111321 - 2¹ = 1113111319 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1113111321.

It is not an unprimeable number, because it can be changed into a prime (1113111331) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 103906 + ... + 114116.

It is an arithmetic number, because the mean of its divisors is an integer number (55144800).

Almost surely, 2^1113111321 is an apocalyptic number.

It is an amenable number.

1113111321 is a deficient number, since it is larger than the sum of its proper divisors (651522279).

1113111321 is a wasteful number, since it uses less digits than its factorization.

1113111321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10429.

The product of its digits is 18, while the sum is 15.

The square root of 1113111321 is about 33363.3229909732. The cubic root of 1113111321 is about 1036.3653077962.

Adding to 1113111321 its reverse (1231113111), we get a palindrome (2344224432).

The spelling of 1113111321 in words is "one billion, one hundred thirteen million, one hundred eleven thousand, three hundred twenty-one".