2402220404021 has 8 divisors (see below), whose sum is σ = 2445558318744. Its totient is φ = 2359010142720.

The previous prime is 2402220404011. The next prime is 2402220404053. The reversal of 2402220404021 is 1204040222042.

It can be written as a sum of positive squares in 4 ways, for example, as 378699928996 + 2023520475025 = 615386^2 + 1422505^2 .

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-2402220404021 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 (2402220404011) 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, 31875380 + ... + 31950653.

It is an arithmetic number, because the mean of its divisors is an integer number (305694789843).

Almost surely, 2^{2402220404021} is an apocalyptic number.

It is an amenable number.

2402220404021 is a deficient number, since it is larger than the sum of its proper divisors (43337914723).

2402220404021 is an equidigital number, since it uses as much as digits as its factorization.

2402220404021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63826711.

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 2402220404021 its reverse (1204040222042), we get a palindrome (3606260626063).

The spelling of 2402220404021 in words is "two trillion, four hundred two billion, two hundred twenty million, four hundred four thousand, twenty-one".