122378099 has 4 divisors (see below), whose sum is σ = 122510760. Its totient is φ = 122245440.

The previous prime is 122378063. The next prime is 122378119. The reversal of 122378099 is 990873221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122378099 is a prime.

It is a super-2 number, since 2×122378099² = 29952798229707602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122378299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64937 + ... + 66794.

It is an arithmetic number, because the mean of its divisors is an integer number (30627690).

Almost surely, 2^122378099 is an apocalyptic number.

122378099 is a deficient number, since it is larger than the sum of its proper divisors (132661).

122378099 is an equidigital number, since it uses as much as digits as its factorization.

122378099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132660.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 122378099 is about 11062.4635140641. The cubic root of 122378099 is about 496.4794009466.

The spelling of 122378099 in words is "one hundred twenty-two million, three hundred seventy-eight thousand, ninety-nine".