11222121652 has 24 divisors (see below), whose sum is σ = 22461727680. Its totient is φ = 4805734080.

The previous prime is 11222121649. The next prime is 11222121661. The reversal of 11222121652 is 25612122211.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119374 + ... + 191557.

It is an arithmetic number, because the mean of its divisors is an integer number (935905320).

Almost surely, 2^11222121652 is an apocalyptic number.

It is an amenable number.

11222121652 is an abundant number, since it is smaller than the sum of its proper divisors (11239606028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11222121652 is a wasteful number, since it uses less digits than its factorization.

11222121652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312231 (or 312229 counting only the distinct ones).

The product of its digits is 960, while the sum is 25.

Adding to 11222121652 its reverse (25612122211), we get a palindrome (36834243863).

The spelling of 11222121652 in words is "eleven billion, two hundred twenty-two million, one hundred twenty-one thousand, six hundred fifty-two".