122102787 has 4 divisors (see below), whose sum is σ = 162803720. Its totient is φ = 81401856.

The previous prime is 122102779. The next prime is 122102807. The reversal of 122102787 is 787201221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 787201221 = 3 ⋅262400407.

It is not a de Polignac number, because 122102787 - 2³ = 122102779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122102777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20350462 + ... + 20350467.

It is an arithmetic number, because the mean of its divisors is an integer number (40700930).

Almost surely, 2^122102787 is an apocalyptic number.

122102787 is a deficient number, since it is larger than the sum of its proper divisors (40700933).

122102787 is an equidigital number, since it uses as much as digits as its factorization.

122102787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40700932.

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 122102787 is about 11050.0129864177. The cubic root of 122102787 is about 496.1068142205.

The spelling of 122102787 in words is "one hundred twenty-two million, one hundred two thousand, seven hundred eighty-seven".