122145015 has 16 divisors (see below), whose sum is σ = 205718400. Its totient is φ = 61715232.

The previous prime is 122145011. The next prime is 122145031. The reversal of 122145015 is 510541221.

It is not a de Polignac number, because 122145015 - 2² = 122145011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122144982 and 122145000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122145011) 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 15 ways as a sum of consecutive naturals, for example, 214005 + ... + 214574.

It is an arithmetic number, because the mean of its divisors is an integer number (12857400).

Almost surely, 2^122145015 is an apocalyptic number.

122145015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

122145015 is a deficient number, since it is larger than the sum of its proper divisors (83573385).

122145015 is a wasteful number, since it uses less digits than its factorization.

122145015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428606.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 122145015 is about 11051.9235882266. The cubic root of 122145015 is about 496.1639987845.

Adding to 122145015 its reverse (510541221), we get a palindrome (632686236).

The spelling of 122145015 in words is "one hundred twenty-two million, one hundred forty-five thousand, fifteen".