115044321421 has 2 divisors, whose sum is σ = 115044321422. Its totient is φ = 115044321420.

The previous prime is 115044321409. The next prime is 115044321439. The reversal of 115044321421 is 124123440511.

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., 114429975625 + 614345796 = 338275^2 + 24786^2 .

It is a cyclic number.

It is not a de Polignac number, because 115044321421 - 2²⁵ = 115010766989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 115044321421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115044321401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57522160710 + 57522160711.

It is an arithmetic number, because the mean of its divisors is an integer number (57522160711).

Almost surely, 2^115044321421 is an apocalyptic number.

It is an amenable number.

115044321421 is a deficient number, since it is larger than the sum of its proper divisors (1).

115044321421 is an equidigital number, since it uses as much as digits as its factorization.

115044321421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 115044321421 its reverse (124123440511), we get a palindrome (239167761932).

The spelling of 115044321421 in words is "one hundred fifteen billion, forty-four million, three hundred twenty-one thousand, four hundred twenty-one".