2421220404 has 24 divisors (see below), whose sum is σ = 5831757568. Its totient is φ = 781038720.

The previous prime is 2421220397. The next prime is 2421220421. The reversal of 2421220404 is 4040221242.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3253957 + ... + 3254700.

Almost surely, 2^2421220404 is an apocalyptic number.

It is an amenable number.

2421220404 is an abundant number, since it is smaller than the sum of its proper divisors (3410537164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2421220404 is a wasteful number, since it uses less digits than its factorization.

2421220404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6508695 (or 6508693 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 2421220404 is about 49205.8980611065. The cubic root of 2421220404 is about 1342.8003374255.

Adding to 2421220404 its reverse (4040221242), we get a palindrome (6461441646).

The spelling of 2421220404 in words is "two billion, four hundred twenty-one million, two hundred twenty thousand, four hundred four".