211102121121113 has 4 divisors (see below), whose sum is σ = 211103294292660. Its totient is φ = 211100947949568.

The previous prime is 211102121121107. The next prime is 211102121121179. The reversal of 211102121121113 is 311121121201112.

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 166472880538969 + 44629240582144 = 12902437^2 + 6680512^2 .

It is a cyclic number.

It is not a de Polignac number, because 211102121121113 - 2²⁰ = 211102120072537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211102121111113) 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, 586315820 + ... + 586675757.

It is an arithmetic number, because the mean of its divisors is an integer number (52775823573165).

Almost surely, 2^{211102121121113} is an apocalyptic number.

It is an amenable number.

211102121121113 is a deficient number, since it is larger than the sum of its proper divisors (1173171547).

211102121121113 is a wasteful number, since it uses less digits than its factorization.

211102121121113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173171546.

The product of its (nonzero) digits is 48, while the sum is 20.

Adding to 211102121121113 its reverse (311121121201112), we get a palindrome (522223242322225).

The spelling of 211102121121113 in words is "two hundred eleven trillion, one hundred two billion, one hundred twenty-one million, one hundred twenty-one thousand, one hundred thirteen".