122720067 has 6 divisors (see below), whose sum is σ = 177262332. Its totient is φ = 81813372.

The previous prime is 122720063. The next prime is 122720077. The reversal of 122720067 is 760027221.

It is not a de Polignac number, because 122720067 - 2² = 122720063 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122720067.

It is not an unprimeable number, because it can be changed into a prime (122720063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6817773 + ... + 6817790.

It is an arithmetic number, because the mean of its divisors is an integer number (29543722).

Almost surely, 2^122720067 is an apocalyptic number.

122720067 is a deficient number, since it is larger than the sum of its proper divisors (54542265).

122720067 is a wasteful number, since it uses less digits than its factorization.

122720067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13635569 (or 13635566 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 122720067 is about 11077.9089633378. The cubic root of 122720067 is about 496.9414176315.

Adding to 122720067 its reverse (760027221), we get a palindrome (882747288).

The spelling of 122720067 in words is "one hundred twenty-two million, seven hundred twenty thousand, sixty-seven".