11202120111 has 64 divisors (see below), whose sum is σ = 19873817600. Its totient is φ = 5446434816.

The previous prime is 11202120067. The next prime is 11202120119. The reversal of 11202120111 is 11102120211.

It is not a de Polignac number, because 11202120111 - 2¹⁰ = 11202119087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11202120119) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 162735 + ... + 221103.

It is an arithmetic number, because the mean of its divisors is an integer number (310528400).

Almost surely, 2^11202120111 is an apocalyptic number.

11202120111 is a deficient number, since it is larger than the sum of its proper divisors (8671697489).

11202120111 is a wasteful number, since it uses less digits than its factorization.

11202120111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58448.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11202120111 its reverse (11102120211), we get a palindrome (22304240322).

The spelling of 11202120111 in words is "eleven billion, two hundred two million, one hundred twenty thousand, one hundred eleven".