122155305 has 8 divisors (see below), whose sum is σ = 195448512. Its totient is φ = 65149488.

The previous prime is 122155291. The next prime is 122155307. The reversal of 122155305 is 503551221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 122155305 - 2⁴ = 122155289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122155307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4071829 + ... + 4071858.

It is an arithmetic number, because the mean of its divisors is an integer number (24431064).

Almost surely, 2^122155305 is an apocalyptic number.

122155305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122155305 is a deficient number, since it is larger than the sum of its proper divisors (73293207).

122155305 is an equidigital number, since it uses as much as digits as its factorization.

122155305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8143695.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 122155305 is about 11052.3891082426. The cubic root of 122155305 is about 496.1779313607.

The spelling of 122155305 in words is "one hundred twenty-two million, one hundred fifty-five thousand, three hundred five".