42204411002021 has 8 divisors (see below), whose sum is σ = 42376593303000. Its totient is φ = 42032576194560.

The previous prime is 42204411002009. The next prime is 42204411002063. The reversal of 42204411002021 is 12020011440224.

It can be written as a sum of positive squares in 4 ways, for example, as 12612051309025 + 29592359692996 = 3551345^2 + 5439886^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42204411002021 is a prime.

It is a super-2 number, since 2×42204411002021² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42204411002321) 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, 86629976 + ... + 87115793.

It is an arithmetic number, because the mean of its divisors is an integer number (5297074162875).

Almost surely, 2^{42204411002021} is an apocalyptic number.

It is an amenable number.

42204411002021 is a deficient number, since it is larger than the sum of its proper divisors (172182300979).

42204411002021 is a wasteful number, since it uses less digits than its factorization.

42204411002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173746759.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 42204411002021 its reverse (12020011440224), we get a palindrome (54224422442245).

The spelling of 42204411002021 in words is "forty-two trillion, two hundred four billion, four hundred eleven million, two thousand, twenty-one".