127222406249 has 2 divisors, whose sum is σ = 127222406250. Its totient is φ = 127222406248.

The previous prime is 127222406243. The next prime is 127222406293. The reversal of 127222406249 is 942604222721.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96989890624 + 30232515625 = 311432^2 + 173875^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-127222406249 is a prime.

It is not a weakly prime, because it can be changed into another prime (127222406243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63611203124 + 63611203125.

It is an arithmetic number, because the mean of its divisors is an integer number (63611203125).

Almost surely, 2^127222406249 is an apocalyptic number.

It is an amenable number.

127222406249 is a deficient number, since it is larger than the sum of its proper divisors (1).

127222406249 is an equidigital number, since it uses as much as digits as its factorization.

127222406249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 41.

The spelling of 127222406249 in words is "one hundred twenty-seven billion, two hundred twenty-two million, four hundred six thousand, two hundred forty-nine".