11100010421 has 4 divisors (see below), whose sum is σ = 11102839500. Its totient is φ = 11097181344.

The previous prime is 11100010367. The next prime is 11100010457. The reversal of 11100010421 is 12401000111.

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 431392900 + 10668617521 = 20770^2 + 103289^2 .

It is a cyclic number.

It is not a de Polignac number, because 11100010421 - 2⁶ = 11100010357 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 (11100030421) 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, 1408646 + ... + 1416503.

It is an arithmetic number, because the mean of its divisors is an integer number (2775709875).

Almost surely, 2^11100010421 is an apocalyptic number.

It is an amenable number.

11100010421 is a deficient number, since it is larger than the sum of its proper divisors (2829079).

11100010421 is an equidigital number, since it uses as much as digits as its factorization.

11100010421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2829078.

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

Adding to 11100010421 its reverse (12401000111), we get a palindrome (23501010532).

The spelling of 11100010421 in words is "eleven billion, one hundred million, ten thousand, four hundred twenty-one".