11202120101 has 4 divisors (see below), whose sum is σ = 11203928172. Its totient is φ = 11200312032.

The previous prime is 11202120067. The next prime is 11202120119. The reversal of 11202120101 is 10102120211.

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 9602040100 + 1600080001 = 97990^2 + 40001^2 .

It is a cyclic number.

It is not a de Polignac number, because 11202120101 - 2³⁰ = 10128378277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11202120401) 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, 894710 + ... + 907143.

It is an arithmetic number, because the mean of its divisors is an integer number (2800982043).

Almost surely, 2^11202120101 is an apocalyptic number.

It is an amenable number.

11202120101 is a deficient number, since it is larger than the sum of its proper divisors (1808071).

11202120101 is an equidigital number, since it uses as much as digits as its factorization.

11202120101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1808070.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 11202120101 its reverse (10102120211), we get a palindrome (21304240312).

The spelling of 11202120101 in words is "eleven billion, two hundred two million, one hundred twenty thousand, one hundred one".