122172247 has 2 divisors, whose sum is σ = 122172248. Its totient is φ = 122172246.

The previous prime is 122172227. The next prime is 122172263. The reversal of 122172247 is 742271221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122172247 - 2⁷ = 122172119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122172227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61086123 + 61086124.

It is an arithmetic number, because the mean of its divisors is an integer number (61086124).

Almost surely, 2^122172247 is an apocalyptic number.

122172247 is a deficient number, since it is larger than the sum of its proper divisors (1).

122172247 is an equidigital number, since it uses as much as digits as its factorization.

122172247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3136, while the sum is 28.

The square root of 122172247 is about 11053.1555222932. The cubic root of 122172247 is about 496.2008689862.

The spelling of 122172247 in words is "one hundred twenty-two million, one hundred seventy-two thousand, two hundred forty-seven".