122221015 has 32 divisors (see below), whose sum is σ = 177408000. Its totient is φ = 78962688.

The previous prime is 122220983. The next prime is 122221019. The reversal of 122221015 is 510122221.

It is a happy number.

It is not a de Polignac number, because 122221015 - 2⁵ = 122220983 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122221015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122221019) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 158551 + ... + 159319.

It is an arithmetic number, because the mean of its divisors is an integer number (5544000).

Almost surely, 2^122221015 is an apocalyptic number.

122221015 is a deficient number, since it is larger than the sum of its proper divisors (55186985).

122221015 is a wasteful number, since it uses less digits than its factorization.

122221015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1039.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 122221015 is about 11055.3613690372. The cubic root of 122221015 is about 496.2668837194.

Adding to 122221015 its reverse (510122221), we get a palindrome (632343236).

The spelling of 122221015 in words is "one hundred twenty-two million, two hundred twenty-one thousand, fifteen".