122277247 has 4 divisors (see below), whose sum is σ = 122365440. Its totient is φ = 122189056.

The previous prime is 122277229. The next prime is 122277257. The reversal of 122277247 is 742772221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 742772221 = 409 ⋅1816069.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122277247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122277257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41983 + ... + 44800.

It is an arithmetic number, because the mean of its divisors is an integer number (30591360).

Almost surely, 2^122277247 is an apocalyptic number.

122277247 is a deficient number, since it is larger than the sum of its proper divisors (88193).

122277247 is an equidigital number, since it uses as much as digits as its factorization.

122277247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88192.

The product of its digits is 21952, while the sum is 34.

The square root of 122277247 is about 11057.9042770319. The cubic root of 122277247 is about 496.3429802913.

The spelling of 122277247 in words is "one hundred twenty-two million, two hundred seventy-seven thousand, two hundred forty-seven".