11202102112121 has 4 divisors (see below), whose sum is σ = 11237891576052. Its totient is φ = 11166312648192.

The previous prime is 11202102112109. The next prime is 11202102112147. The reversal of 11202102112121 is 12121120120211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 827190250000 + 10374911862121 = 909500^2 + 3221011^2 .

It is a cyclic number.

It is not a de Polignac number, because 11202102112121 - 2¹⁰ = 11202102111097 is a prime.

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 11202102112121.

It is not an unprimeable number, because it can be changed into a prime (11202102112151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17894731496 + ... + 17894732121.

It is an arithmetic number, because the mean of its divisors is an integer number (2809472894013).

Almost surely, 2^{11202102112121} is an apocalyptic number.

It is an amenable number.

11202102112121 is a deficient number, since it is larger than the sum of its proper divisors (35789463931).

11202102112121 is an equidigital number, since it uses as much as digits as its factorization.

11202102112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35789463930.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11202102112121 its reverse (12121120120211), we get a palindrome (23323222232332).

The spelling of 11202102112121 in words is "eleven trillion, two hundred two billion, one hundred two million, one hundred twelve thousand, one hundred twenty-one".