244254356373221 has 2 divisors, whose sum is σ = 244254356373222. Its totient is φ = 244254356373220.

The previous prime is 244254356373217. The next prime is 244254356373299. The reversal of 244254356373221 is 122373653452442.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 206861742870721 + 37392613502500 = 14382689^2 + 6114950^2 .

It is a cyclic number.

It is not a de Polignac number, because 244254356373221 - 2² = 244254356373217 is a prime.

It is a super-2 number, since 2×244254356373221² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (244254356375221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122127178186610 + 122127178186611.

It is an arithmetic number, because the mean of its divisors is an integer number (122127178186611).

Almost surely, 2^{244254356373221} is an apocalyptic number.

It is an amenable number.

244254356373221 is a deficient number, since it is larger than the sum of its proper divisors (1).

244254356373221 is an equidigital number, since it uses as much as digits as its factorization.

244254356373221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29030400, while the sum is 53.

The spelling of 244254356373221 in words is "two hundred forty-four trillion, two hundred fifty-four billion, three hundred fifty-six million, three hundred seventy-three thousand, two hundred twenty-one".