11512022213 has 8 divisors (see below), whose sum is σ = 11611803000. Its totient is φ = 11412623808.

The previous prime is 11512022191. The next prime is 11512022231. The reversal of 11512022213 is 31222021511.

It can be written as a sum of positive squares in 4 ways, for example, as 8761334404 + 2750687809 = 93602^2 + 52447^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 11512022213 - 2²⁰ = 11510973637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11512022513) 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, 34958 + ... + 155711.

It is an arithmetic number, because the mean of its divisors is an integer number (1451475375).

Almost surely, 2^11512022213 is an apocalyptic number.

It is an amenable number.

11512022213 is a deficient number, since it is larger than the sum of its proper divisors (99780787).

11512022213 is a wasteful number, since it uses less digits than its factorization.

11512022213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191191.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 11512022213 its reverse (31222021511), we get a palindrome (42734043724).

The spelling of 11512022213 in words is "eleven billion, five hundred twelve million, twenty-two thousand, two hundred thirteen".