2243243001421 has 4 divisors (see below), whose sum is σ = 2274837973344. Its totient is φ = 2211648029500.

The previous prime is 2243243001367. The next prime is 2243243001457. The reversal of 2243243001421 is 1241003423422.

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 a de Polignac number, because none of the positive numbers 2^k-2243243001421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2243243001421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2243247001421) 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, 15797485855 + ... + 15797485996.

It is an arithmetic number, because the mean of its divisors is an integer number (568709493336).

Almost surely, 2^{2243243001421} is an apocalyptic number.

It is an amenable number.

2243243001421 is a deficient number, since it is larger than the sum of its proper divisors (31594971923).

2243243001421 is an equidigital number, since it uses as much as digits as its factorization.

2243243001421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31594971922.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 2243243001421 its reverse (1241003423422), we get a palindrome (3484246424843).

The spelling of 2243243001421 in words is "two trillion, two hundred forty-three billion, two hundred forty-three million, one thousand, four hundred twenty-one".