11101220200021 has 16 divisors (see below), whose sum is σ = 13267439716608. Its totient is φ = 9081878256000.

The previous prime is 11101220200001. The next prime is 11101220200027. The reversal of 11101220200021 is 12000202210111.

It is a de Polignac number, because none of the positive numbers 2^k-11101220200021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11101220199974 and 11101220200010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11101220200027) 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, 74710680 + ... + 74859121.

It is an arithmetic number, because the mean of its divisors is an integer number (829214982288).

Almost surely, 2^{11101220200021} is an apocalyptic number.

It is an amenable number.

11101220200021 is a deficient number, since it is larger than the sum of its proper divisors (2166219516587).

11101220200021 is a wasteful number, since it uses less digits than its factorization.

11101220200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149570292.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 11101220200021 its reverse (12000202210111), we get a palindrome (23101422410132).

The spelling of 11101220200021 in words is "eleven trillion, one hundred one billion, two hundred twenty million, two hundred thousand, twenty-one".