15122122247 has 2 divisors, whose sum is σ = 15122122248. Its totient is φ = 15122122246.

The previous prime is 15122122243. The next prime is 15122122261. The reversal of 15122122247 is 74222122151.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15122122247 - 2² = 15122122243 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15122122243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7561061123 + 7561061124.

It is an arithmetic number, because the mean of its divisors is an integer number (7561061124).

Almost surely, 2^15122122247 is an apocalyptic number.

15122122247 is a deficient number, since it is larger than the sum of its proper divisors (1).

15122122247 is an equidigital number, since it uses as much as digits as its factorization.

15122122247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4480, while the sum is 29.

Adding to 15122122247 its reverse (74222122151), we get a palindrome (89344244398).

The spelling of 15122122247 in words is "fifteen billion, one hundred twenty-two million, one hundred twenty-two thousand, two hundred forty-seven".