11231022213 has 6 divisors (see below), whose sum is σ = 16222587654. Its totient is φ = 7487348136.

The previous prime is 11231022191. The next prime is 11231022221. The reversal of 11231022213 is 31222013211.

It can be written as a sum of positive squares in only one way, i.e., 10742700609 + 488321604 = 103647^2 + 22098^2 .

It is not a de Polignac number, because 11231022213 - 2⁶ = 11231022149 is a prime.

It is a super-2 number, since 2×11231022213² (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 (11231022223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 623945670 + ... + 623945687.

It is an arithmetic number, because the mean of its divisors is an integer number (2703764609).

Almost surely, 2^11231022213 is an apocalyptic number.

It is an amenable number.

11231022213 is a deficient number, since it is larger than the sum of its proper divisors (4991565441).

11231022213 is a wasteful number, since it uses less digits than its factorization.

11231022213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247891363 (or 1247891360 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 11231022213 its reverse (31222013211), we get a palindrome (42453035424).

The spelling of 11231022213 in words is "eleven billion, two hundred thirty-one million, twenty-two thousand, two hundred thirteen".