122155205 has 4 divisors (see below), whose sum is σ = 146586252. Its totient is φ = 97724160.

The previous prime is 122155177. The next prime is 122155213. The reversal of 122155205 is 502551221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38962564 + 83192641 = 6242^2 + 9121^2 .

It is not a de Polignac number, because 122155205 - 2⁶ = 122155141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12215516 + ... + 12215525.

It is an arithmetic number, because the mean of its divisors is an integer number (36646563).

Almost surely, 2^122155205 is an apocalyptic number.

It is an amenable number.

122155205 is a deficient number, since it is larger than the sum of its proper divisors (24431047).

122155205 is an equidigital number, since it uses as much as digits as its factorization.

122155205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24431046.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 122155205 is about 11052.3845843329. The cubic root of 122155205 is about 496.1777959653.

The spelling of 122155205 in words is "one hundred twenty-two million, one hundred fifty-five thousand, two hundred five".