11202100021 has 16 divisors (see below), whose sum is σ = 13362336000. Its totient is φ = 9182055168.

The previous prime is 11202099989. The next prime is 11202100033. The reversal of 11202100021 is 12000120211.

It is a cyclic number.

It is not a de Polignac number, because 11202100021 - 2⁵ = 11202099989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11202099980 and 11202100007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11202100051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1032895 + ... + 1043683.

It is an arithmetic number, because the mean of its divisors is an integer number (835146000).

Almost surely, 2^11202100021 is an apocalyptic number.

It is an amenable number.

11202100021 is a deficient number, since it is larger than the sum of its proper divisors (2160235979).

11202100021 is a wasteful number, since it uses less digits than its factorization.

11202100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17268.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 11202100021 its reverse (12000120211), we get a palindrome (23202220232).

The spelling of 11202100021 in words is "eleven billion, two hundred two million, one hundred thousand, twenty-one".