122267287 has 4 divisors (see below), whose sum is σ = 127583280. Its totient is φ = 116951296.

The previous prime is 122267269. The next prime is 122267291. The reversal of 122267287 is 782762221.

122267287 is nontrivially palindromic in base 8.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 782762221 = 101 ⋅7750121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122267287 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 (122267227) 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, 2657962 + ... + 2658007.

It is an arithmetic number, because the mean of its divisors is an integer number (31895820).

Almost surely, 2^122267287 is an apocalyptic number.

122267287 is a deficient number, since it is larger than the sum of its proper divisors (5315993).

122267287 is an equidigital number, since it uses as much as digits as its factorization.

122267287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5315992.

The product of its digits is 37632, while the sum is 37.

The square root of 122267287 is about 11057.4539112763. The cubic root of 122267287 is about 496.3295035123.

The spelling of 122267287 in words is "one hundred twenty-two million, two hundred sixty-seven thousand, two hundred eighty-seven".