115152342101221 has 2 divisors, whose sum is σ = 115152342101222. Its totient is φ = 115152342101220.

The previous prime is 115152342101183. The next prime is 115152342101249. The reversal of 115152342101221 is 122101243251511.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92238064524225 + 22914277576996 = 9604065^2 + 4786886^2 .

It is a cyclic number.

It is not a de Polignac number, because 115152342101221 - 2⁹ = 115152342100709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115152342101281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57576171050610 + 57576171050611.

It is an arithmetic number, because the mean of its divisors is an integer number (57576171050611).

Almost surely, 2^{115152342101221} is an apocalyptic number.

It is an amenable number.

115152342101221 is a deficient number, since it is larger than the sum of its proper divisors (1).

115152342101221 is an equidigital number, since it uses as much as digits as its factorization.

115152342101221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4800, while the sum is 31.

Adding to 115152342101221 its reverse (122101243251511), we get a palindrome (237253585352732).

The spelling of 115152342101221 in words is "one hundred fifteen trillion, one hundred fifty-two billion, three hundred forty-two million, one hundred one thousand, two hundred twenty-one".