11223312013 has 4 divisors (see below), whose sum is σ = 11585354368. Its totient is φ = 10861269660.

The previous prime is 11223311971. The next prime is 11223312017. The reversal of 11223312013 is 31021332211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11223312013 - 2¹³ = 11223303821 is a prime.

It is a super-2 number, since 2×11223312013² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11223312017) 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, 181021131 + ... + 181021192.

It is an arithmetic number, because the mean of its divisors is an integer number (2896338592).

Almost surely, 2^11223312013 is an apocalyptic number.

It is an amenable number.

11223312013 is a deficient number, since it is larger than the sum of its proper divisors (362042355).

11223312013 is an equidigital number, since it uses as much as digits as its factorization.

11223312013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362042354.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 11223312013 its reverse (31021332211), we get a palindrome (42244644224).

The spelling of 11223312013 in words is "eleven billion, two hundred twenty-three million, three hundred twelve thousand, thirteen".