11100001211021 has 16 divisors (see below), whose sum is σ = 11777710623360. Its totient is φ = 10443139237440.

The previous prime is 11100001210981. The next prime is 11100001211041. The reversal of 11100001211021 is 12011210000111.

It is a cyclic number.

It is not a de Polignac number, because 11100001211021 - 2²⁶ = 11099934102157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11100001210993 and 11100001211011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11100001211041) 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, 10046705 + ... + 11096678.

It is an arithmetic number, because the mean of its divisors is an integer number (736106913960).

Almost surely, 2^{11100001211021} is an apocalyptic number.

It is an amenable number.

11100001211021 is a deficient number, since it is larger than the sum of its proper divisors (677709412339).

11100001211021 is a wasteful number, since it uses less digits than its factorization.

11100001211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21143876.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 11100001211021 its reverse (12011210000111), we get a palindrome (23111211211132).

The spelling of 11100001211021 in words is "eleven trillion, one hundred billion, one million, two hundred eleven thousand, twenty-one".