1113021321 has 8 divisors (see below), whose sum is σ = 1490684160. Its totient is φ = 738686352.

The previous prime is 1113021319. The next prime is 1113021337. The reversal of 1113021321 is 1231203111.

It is a happy number.

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

It is not a de Polignac number, because 1113021321 - 2¹ = 1113021319 is a prime.

It is a super-2 number, since 2×1113021321² = 2477632922001170082, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1113021321.

It is not an unprimeable number, because it can be changed into a prime (1113021341) 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, 831186 + ... + 832523.

It is an arithmetic number, because the mean of its divisors is an integer number (186335520).

Almost surely, 2^1113021321 is an apocalyptic number.

It is an amenable number.

1113021321 is a deficient number, since it is larger than the sum of its proper divisors (377662839).

1113021321 is a wasteful number, since it uses less digits than its factorization.

1113021321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1663935.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1113021321 is about 33361.9741771976. The cubic root of 1113021321 is about 1036.3373754622.

Adding to 1113021321 its reverse (1231203111), we get a palindrome (2344224432).

The spelling of 1113021321 in words is "one billion, one hundred thirteen million, twenty-one thousand, three hundred twenty-one".