122881155 has 16 divisors (see below), whose sum is σ = 197181600. Its totient is φ = 65346048.

The previous prime is 122881153. The next prime is 122881169. The reversal of 122881155 is 551188221.

It is not a de Polignac number, because 122881155 - 2¹ = 122881153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122881153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6502 + ... + 16971.

It is an arithmetic number, because the mean of its divisors is an integer number (12323850).

Almost surely, 2^122881155 is an apocalyptic number.

122881155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

122881155 is a deficient number, since it is larger than the sum of its proper divisors (74300445).

122881155 is a wasteful number, since it uses less digits than its factorization.

122881155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23830.

The product of its digits is 6400, while the sum is 33.

The square root of 122881155 is about 11085.1772651591. The cubic root of 122881155 is about 497.1587586099.

The spelling of 122881155 in words is "one hundred twenty-two million, eight hundred eighty-one thousand, one hundred fifty-five".