11042100400021 has 8 divisors (see below), whose sum is σ = 11054290118400. Its totient is φ = 11029911650160.

The previous prime is 11042100399983. The next prime is 11042100400061. The reversal of 11042100400021 is 12000400124011.

It is a happy number.

11042100400021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11042100400021 - 2⁹ = 11042100399509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11042100399968 and 11042100400004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11042100400061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23897460 + ... + 24355138.

It is an arithmetic number, because the mean of its divisors is an integer number (1381786264800).

Almost surely, 2^{11042100400021} is an apocalyptic number.

It is an amenable number.

11042100400021 is a deficient number, since it is larger than the sum of its proper divisors (12189718379).

11042100400021 is an equidigital number, since it uses as much as digits as its factorization.

11042100400021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484259.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 11042100400021 its reverse (12000400124011), we get a palindrome (23042500524032).

The spelling of 11042100400021 in words is "eleven trillion, forty-two billion, one hundred million, four hundred thousand, twenty-one".