11142313221 has 16 divisors (see below), whose sum is σ = 16027974144. Its totient is φ = 6844484544.

The previous prime is 11142313207. The next prime is 11142313243. The reversal of 11142313221 is 12231324111.

It is not a de Polignac number, because 11142313221 - 2⁶ = 11142313157 is a prime.

It is a super-2 number, since 2×11142313221² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11142313921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234741 + ... + 278186.

It is an arithmetic number, because the mean of its divisors is an integer number (1001748384).

Almost surely, 2^11142313221 is an apocalyptic number.

It is an amenable number.

11142313221 is a deficient number, since it is larger than the sum of its proper divisors (4885660923).

11142313221 is a wasteful number, since it uses less digits than its factorization.

11142313221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513500.

The product of its digits is 288, while the sum is 21.

Adding to 11142313221 its reverse (12231324111), we get a palindrome (23373637332).

The spelling of 11142313221 in words is "eleven billion, one hundred forty-two million, three hundred thirteen thousand, two hundred twenty-one".