122655219 has 4 divisors (see below), whose sum is σ = 163540296. Its totient is φ = 81770144.

The previous prime is 122655217. The next prime is 122655223. The reversal of 122655219 is 912556221.

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 122655219 - 2¹ = 122655217 is a prime.

It is a super-2 number, since 2×122655219² = 30088605495875922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 122655219.

It is not an unprimeable number, because it can be changed into a prime (122655217) 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, 20442534 + ... + 20442539.

It is an arithmetic number, because the mean of its divisors is an integer number (40885074).

Almost surely, 2^122655219 is an apocalyptic number.

122655219 is a deficient number, since it is larger than the sum of its proper divisors (40885077).

122655219 is an equidigital number, since it uses as much as digits as its factorization.

122655219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40885076.

The product of its digits is 10800, while the sum is 33.

The square root of 122655219 is about 11074.9816704137. The cubic root of 122655219 is about 496.8538705939.

The spelling of 122655219 in words is "one hundred twenty-two million, six hundred fifty-five thousand, two hundred nineteen".