11313202121 has 16 divisors (see below), whose sum is σ = 12376099008. Its totient is φ = 10278100800.

The previous prime is 11313202067. The next prime is 11313202133. The reversal of 11313202121 is 12120231311.

It is a cyclic number.

It is not a de Polignac number, because 11313202121 - 2²² = 11309007817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11313202121.

It is not an unprimeable number, because it can be changed into a prime (11313202141) 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, 1119431 + ... + 1129491.

It is an arithmetic number, because the mean of its divisors is an integer number (773506188).

Almost surely, 2^11313202121 is an apocalyptic number.

It is an amenable number.

11313202121 is a deficient number, since it is larger than the sum of its proper divisors (1062896887).

11313202121 is a wasteful number, since it uses less digits than its factorization.

11313202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11432.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 11313202121 its reverse (12120231311), we get a palindrome (23433433432).

The spelling of 11313202121 in words is "eleven billion, three hundred thirteen million, two hundred two thousand, one hundred twenty-one".