115222052450221 has 2 divisors, whose sum is σ = 115222052450222. Its totient is φ = 115222052450220.

The previous prime is 115222052450207. The next prime is 115222052450249. The reversal of 115222052450221 is 122054250222511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60954151894596 + 54267900555625 = 7807314^2 + 7366675^2 .

It is an emirp because it is prime and its reverse (122054250222511) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115222052450221 is a prime.

It is a super-2 number, since 2×115222052450221² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115222052451221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57611026225110 + 57611026225111.

It is an arithmetic number, because the mean of its divisors is an integer number (57611026225111).

Almost surely, 2^{115222052450221} is an apocalyptic number.

It is an amenable number.

115222052450221 is a deficient number, since it is larger than the sum of its proper divisors (1).

115222052450221 is an equidigital number, since it uses as much as digits as its factorization.

115222052450221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32000, while the sum is 34.

The spelling of 115222052450221 in words is "one hundred fifteen trillion, two hundred twenty-two billion, fifty-two million, four hundred fifty thousand, two hundred twenty-one".