11122202121 has 16 divisors (see below), whose sum is σ = 15616833600. Its totient is φ = 7021522368.

The previous prime is 11122202051. The next prime is 11122202123. The reversal of 11122202121 is 12120222111.

It is not a de Polignac number, because 11122202121 - 2¹⁷ = 11122071049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11122202121.

It is not an unprimeable number, because it can be changed into a prime (11122202123) 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, 95335 + ... + 177011.

It is an arithmetic number, because the mean of its divisors is an integer number (976052100).

Almost surely, 2^11122202121 is an apocalyptic number.

It is an amenable number.

11122202121 is a deficient number, since it is larger than the sum of its proper divisors (4494631479).

11122202121 is a wasteful number, since it uses less digits than its factorization.

11122202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84088.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11122202121 its reverse (12120222111), we get a palindrome (23242424232).

The spelling of 11122202121 in words is "eleven billion, one hundred twenty-two million, two hundred two thousand, one hundred twenty-one".