122722155 has 64 divisors (see below), whose sum is σ = 227635200. Its totient is φ = 62674560.

The previous prime is 122722153. The next prime is 122722157. The reversal of 122722155 is 551227221.

It is an interprime number because it is at equal distance from previous prime (122722153) and next prime (122722157).

It is not a de Polignac number, because 122722155 - 2¹ = 122722153 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (122722153) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 394450 + ... + 394760.

It is an arithmetic number, because the mean of its divisors is an integer number (3556800).

Almost surely, 2^122722155 is an apocalyptic number.

122722155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

122722155 is a deficient number, since it is larger than the sum of its proper divisors (104913045).

122722155 is a wasteful number, since it uses less digits than its factorization.

122722155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441 (or 435 counting only the distinct ones).

The product of its digits is 2800, while the sum is 27.

The square root of 122722155 is about 11078.0032045491. The cubic root of 122722155 is about 496.9442359910.

Adding to 122722155 its reverse (551227221), we get a palindrome (673949376).

The spelling of 122722155 in words is "one hundred twenty-two million, seven hundred twenty-two thousand, one hundred fifty-five".