2243440423121 has 4 divisors (see below), whose sum is σ = 2375407506852. Its totient is φ = 2111473339392.

The previous prime is 2243440423061. The next prime is 2243440423127. The reversal of 2243440423121 is 1213240443422.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2081856522496 + 161583900625 = 1442864^2 + 401975^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2243440423121 is a prime.

It is a super-2 number, since 2×2243440423121² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2243440423127) 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, 65983541840 + ... + 65983541873.

It is an arithmetic number, because the mean of its divisors is an integer number (593851876713).

Almost surely, 2^{2243440423121} is an apocalyptic number.

It is an amenable number.

2243440423121 is a deficient number, since it is larger than the sum of its proper divisors (131967083731).

2243440423121 is a wasteful number, since it uses less digits than its factorization.

2243440423121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131967083730.

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 2243440423121 its reverse (1213240443422), we get a palindrome (3456680866543).

The spelling of 2243440423121 in words is "two trillion, two hundred forty-three billion, four hundred forty million, four hundred twenty-three thousand, one hundred twenty-one".