7418900221 has 4 divisors (see below), whose sum is σ = 7424595232. Its totient is φ = 7413205212.

The previous prime is 7418900213. The next prime is 7418900233. The reversal of 7418900221 is 1220098147.

7418900221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 7418900221 - 2³ = 7418900213 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 (7418900261) 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, 2845551 + ... + 2848156.

It is an arithmetic number, because the mean of its divisors is an integer number (1856148808).

Almost surely, 2^7418900221 is an apocalyptic number.

It is an amenable number.

7418900221 is a deficient number, since it is larger than the sum of its proper divisors (5695011).

7418900221 is a wasteful number, since it uses less digits than its factorization.

7418900221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5695010.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 7418900221 is about 86133.0379180951. The cubic root of 7418900221 is about 1950.3527935872.

Adding to 7418900221 its reverse (1220098147), we get a palindrome (8638998368).

The spelling of 7418900221 in words is "seven billion, four hundred eighteen million, nine hundred thousand, two hundred twenty-one".