11252213531 has 8 divisors (see below), whose sum is σ = 12143947200. Its totient is φ = 10364219712.

The previous prime is 11252213491. The next prime is 11252213549. The reversal of 11252213531 is 13531225211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11252213531 is a prime.

It is a super-2 number, since 2×11252213531² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11252213531.

It is not an unprimeable number, because it can be changed into a prime (11252213131) 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, 928706 + ... + 940743.

It is an arithmetic number, because the mean of its divisors is an integer number (1517993400).

Almost surely, 2^11252213531 is an apocalyptic number.

11252213531 is a deficient number, since it is larger than the sum of its proper divisors (891733669).

11252213531 is a wasteful number, since it uses less digits than its factorization.

11252213531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1869925.

The product of its digits is 1800, while the sum is 26.

Adding to 11252213531 its reverse (13531225211), we get a palindrome (24783438742).

The spelling of 11252213531 in words is "eleven billion, two hundred fifty-two million, two hundred thirteen thousand, five hundred thirty-one".