122320615 has 4 divisors (see below), whose sum is σ = 146784744. Its totient is φ = 97856488.

The previous prime is 122320607. The next prime is 122320619. The reversal of 122320615 is 516023221.

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

It is a cyclic number.

It is not a de Polignac number, because 122320615 - 2³ = 122320607 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 (122320619) 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, 12232057 + ... + 12232066.

It is an arithmetic number, because the mean of its divisors is an integer number (36696186).

Almost surely, 2^122320615 is an apocalyptic number.

122320615 is a deficient number, since it is larger than the sum of its proper divisors (24464129).

122320615 is an equidigital number, since it uses as much as digits as its factorization.

122320615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24464128.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 122320615 is about 11059.8650534263. The cubic root of 122320615 is about 496.4016525807.

Adding to 122320615 its reverse (516023221), we get a palindrome (638343836).

It can be divided in two parts, 1223206 and 15, that added together give a palindrome (1223221).

The spelling of 122320615 in words is "one hundred twenty-two million, three hundred twenty thousand, six hundred fifteen".