2420440221 has 8 divisors (see below), whose sum is σ = 3250471840. Its totient is φ = 1602017712.

The previous prime is 2420440219. The next prime is 2420440223. The reversal of 2420440221 is 1220440242.

It is an interprime number because it is at equal distance from previous prime (2420440219) and next prime (2420440223).

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

It is not a de Polignac number, because 2420440221 - 2¹ = 2420440219 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 (2420440223) 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, 2901790 + ... + 2902623.

It is an arithmetic number, because the mean of its divisors is an integer number (406308980).

Almost surely, 2^2420440221 is an apocalyptic number.

It is an amenable number.

2420440221 is a deficient number, since it is larger than the sum of its proper divisors (830031619).

2420440221 is a wasteful number, since it uses less digits than its factorization.

2420440221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5804555.

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

The square root of 2420440221 is about 49197.9696837176. The cubic root of 2420440221 is about 1342.6560930134.

Adding to 2420440221 its sum of digits (21), we get a palindrome (2420440242).

Adding to 2420440221 its reverse (1220440242), we get a palindrome (3640880463).

The spelling of 2420440221 in words is "two billion, four hundred twenty million, four hundred forty thousand, two hundred twenty-one".