11100610021 has 2 divisors, whose sum is σ = 11100610022. Its totient is φ = 11100610020.

The previous prime is 11100609979. The next prime is 11100610051. The reversal of 11100610021 is 12001600111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6582888225 + 4517721796 = 81135^2 + 67214^2 .

It is a cyclic number.

It is not a de Polignac number, because 11100610021 - 2⁷ = 11100609893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11100609983 and 11100610010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11100610051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5550305010 + 5550305011.

It is an arithmetic number, because the mean of its divisors is an integer number (5550305011).

Almost surely, 2^11100610021 is an apocalyptic number.

It is an amenable number.

11100610021 is a deficient number, since it is larger than the sum of its proper divisors (1).

11100610021 is an equidigital number, since it uses as much as digits as its factorization.

11100610021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 13.

The spelling of 11100610021 in words is "eleven billion, one hundred million, six hundred ten thousand, twenty-one".