11101231320021 has 24 divisors (see below), whose sum is σ = 16112733960960. Its totient is φ = 7365002400000.

The previous prime is 11101231320017. The next prime is 11101231320031. The reversal of 11101231320021 is 12002313210111.

11101231320021 is a `hidden beast` number, since 1 + 110 + 1 + 231 + 320 + 0 + 2 + 1 = 666.

11101231320021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11101231320021 - 2² = 11101231320017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11101231319976 and 11101231320003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11101231320031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18850021 + ... + 19430021.

It is an arithmetic number, because the mean of its divisors is an integer number (671363915040).

Almost surely, 2^{11101231320021} is an apocalyptic number.

It is an amenable number.

11101231320021 is a deficient number, since it is larger than the sum of its proper divisors (5011502640939).

11101231320021 is a wasteful number, since it uses less digits than its factorization.

11101231320021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590297 (or 590294 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 11101231320021 its reverse (12002313210111), we get a palindrome (23103544530132).

The spelling of 11101231320021 in words is "eleven trillion, one hundred one billion, two hundred thirty-one million, three hundred twenty thousand, twenty-one".