1113321021231 has 4 divisors (see below), whose sum is σ = 1484428028312. Its totient is φ = 742214014152.

The previous prime is 1113321021223. The next prime is 1113321021233. The reversal of 1113321021231 is 1321201233111.

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

It is not a de Polignac number, because 1113321021231 - 2³ = 1113321021223 is a prime.

It is a super-2 number, since 2×1113321021231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1113321021198 and 1113321021207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113321021233) 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, 185553503536 + ... + 185553503541.

It is an arithmetic number, because the mean of its divisors is an integer number (371107007078).

Almost surely, 2^{1113321021231} is an apocalyptic number.

1113321021231 is a deficient number, since it is larger than the sum of its proper divisors (371107007081).

1113321021231 is an equidigital number, since it uses as much as digits as its factorization.

1113321021231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371107007080.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1113321021231 its reverse (1321201233111), we get a palindrome (2434522254342).

The spelling of 1113321021231 in words is "one trillion, one hundred thirteen billion, three hundred twenty-one million, twenty-one thousand, two hundred thirty-one".