11201222102121 has 6 divisors (see below), whose sum is σ = 16179543036410. Its totient is φ = 7467481401408.

The previous prime is 11201222102117. The next prime is 11201222102123. The reversal of 11201222102121 is 12120122210211.

11201222102121 is a `hidden beast` number, since 1 + 120 + 122 + 210 + 212 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10624594492521 + 576627609600 = 3259539^2 + 759360^2 .

It is not a de Polignac number, because 11201222102121 - 2² = 11201222102117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11201222102094 and 11201222102103.

It is not an unprimeable number, because it can be changed into a prime (11201222102123) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 622290116776 + ... + 622290116793.

Almost surely, 2^{11201222102121} is an apocalyptic number.

It is an amenable number.

11201222102121 is a deficient number, since it is larger than the sum of its proper divisors (4978320934289).

11201222102121 is a wasteful number, since it uses less digits than its factorization.

11201222102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244580233575 (or 1244580233572 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11201222102121 its reverse (12120122210211), we get a palindrome (23321344312332).

The spelling of 11201222102121 in words is "eleven trillion, two hundred one billion, two hundred twenty-two million, one hundred two thousand, one hundred twenty-one".