2422004021 has 4 divisors (see below), whose sum is σ = 2423364192. Its totient is φ = 2420643852.

The previous prime is 2422004009. The next prime is 2422004023. The reversal of 2422004021 is 1204002242.

It is a happy number.

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 2422004021 - 2¹⁸ = 2421741877 is a prime.

It is a super-2 number, since 2×2422004021² = 11732206955480336882, which 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 (2422004023) 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, 677411 + ... + 680976.

It is an arithmetic number, because the mean of its divisors is an integer number (605841048).

Almost surely, 2^2422004021 is an apocalyptic number.

It is an amenable number.

2422004021 is a deficient number, since it is larger than the sum of its proper divisors (1360171).

2422004021 is a wasteful number, since it uses less digits than its factorization.

2422004021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360170.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 2422004021 is about 49213.8600497868. The cubic root of 2422004021 is about 1342.9451855460.

Adding to 2422004021 its reverse (1204002242), we get a palindrome (3626006263).

The spelling of 2422004021 in words is "two billion, four hundred twenty-two million, four thousand, twenty-one".