2241661421 has 4 divisors (see below), whose sum is σ = 2248434144. Its totient is φ = 2234888700.

The previous prime is 2241661417. The next prime is 2241661441. The reversal of 2241661421 is 1241661422.

2241661421 is digitally balanced in base 2, 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 2241661421 - 2² = 2241661417 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 (2241661441) 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, 3385865 + ... + 3386526.

It is an arithmetic number, because the mean of its divisors is an integer number (562108536).

Almost surely, 2^2241661421 is an apocalyptic number.

It is an amenable number.

2241661421 is a deficient number, since it is larger than the sum of its proper divisors (6772723).

2241661421 is an equidigital number, since it uses as much as digits as its factorization.

2241661421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6772722.

The product of its digits is 4608, while the sum is 29.

The square root of 2241661421 is about 47346.1869742432. The cubic root of 2241661421 is about 1308.7499333126.

Subtracting from 2241661421 its reverse (1241661422), we obtain a palindrome (999999999).

The spelling of 2241661421 in words is "two billion, two hundred forty-one million, six hundred sixty-one thousand, four hundred twenty-one".