122249719 has 2 divisors, whose sum is σ = 122249720. Its totient is φ = 122249718.

The previous prime is 122249707. The next prime is 122249749. The reversal of 122249719 is 917942221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122249719 - 2¹⁹ = 121725431 is a prime.

It is a super-2 number, since 2×122249719² = 29889987591157922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122249749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61124859 + 61124860.

It is an arithmetic number, because the mean of its divisors is an integer number (61124860).

Almost surely, 2^122249719 is an apocalyptic number.

122249719 is a deficient number, since it is larger than the sum of its proper divisors (1).

122249719 is an equidigital number, since it uses as much as digits as its factorization.

122249719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 37.

The square root of 122249719 is about 11056.6594864814. The cubic root of 122249719 is about 496.3057306384.

The spelling of 122249719 in words is "one hundred twenty-two million, two hundred forty-nine thousand, seven hundred nineteen".