11101000120021 has 4 divisors (see below), whose sum is σ = 12686857280032. Its totient is φ = 9515142960012.

The previous prime is 11101000119997. The next prime is 11101000120031. The reversal of 11101000120021 is 12002100010111.

11101000120021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11101000120021 - 2²¹ = 11100998022869 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 (11101000120031) 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, 792928579995 + ... + 792928580008.

It is an arithmetic number, because the mean of its divisors is an integer number (3171714320008).

Almost surely, 2^{11101000120021} is an apocalyptic number.

It is an amenable number.

11101000120021 is a deficient number, since it is larger than the sum of its proper divisors (1585857160011).

11101000120021 is an equidigital number, since it uses as much as digits as its factorization.

11101000120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585857160010.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 11101000120021 its reverse (12002100010111), we get a palindrome (23103100130132).

The spelling of 11101000120021 in words is "eleven trillion, one hundred one billion, one hundred twenty thousand, twenty-one".