122245515 has 24 divisors (see below), whose sum is σ = 242163168. Its totient is φ = 55883520.

The previous prime is 122245499. The next prime is 122245549. The reversal of 122245515 is 515542221.

122245515 is a `hidden beast` number, since 122 + 24 + 5 + 515 = 666.

It is not a de Polignac number, because 122245515 - 2⁴ = 122245499 is a prime.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 193726 + ... + 194355.

It is an arithmetic number, because the mean of its divisors is an integer number (10090132).

Almost surely, 2^122245515 is an apocalyptic number.

122245515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

122245515 is a deficient number, since it is larger than the sum of its proper divisors (119917653).

122245515 is a wasteful number, since it uses less digits than its factorization.

122245515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388099 (or 388096 counting only the distinct ones).

The product of its digits is 4000, while the sum is 27.

The square root of 122245515 is about 11056.4693731770. The cubic root of 122245515 is about 496.3000414823.

Adding to 122245515 its reverse (515542221), we get a palindrome (637787736).

It can be divided in two parts, 122245 and 515, that added together give a triangular number (122760 = T₄₉₅).

The spelling of 122245515 in words is "one hundred twenty-two million, two hundred forty-five thousand, five hundred fifteen".