11013021231 has 8 divisors (see below), whose sum is σ = 14693310720. Its totient is φ = 7337372952.

The previous prime is 11013021221. The next prime is 11013021233. The reversal of 11013021231 is 13212031011.

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 11013021231 - 2¹⁵ = 11012988463 is a prime.

It is a super-2 number, since 2×11013021231² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11013021231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11013021233) 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, 1154761 + ... + 1164258.

It is an arithmetic number, because the mean of its divisors is an integer number (1836663840).

Almost surely, 2^11013021231 is an apocalyptic number.

11013021231 is a deficient number, since it is larger than the sum of its proper divisors (3680289489).

11013021231 is a wasteful number, since it uses less digits than its factorization.

11013021231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2320605.

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

Adding to 11013021231 its reverse (13212031011), we get a palindrome (24225052242).

The spelling of 11013021231 in words is "eleven billion, thirteen million, twenty-one thousand, two hundred thirty-one".