12122755 has 8 divisors (see below), whose sum is σ = 14640912. Its totient is φ = 9635808.

The previous prime is 12122723. The next prime is 12122807. The reversal of 12122755 is 55722121.

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

It is a cyclic number.

It is not a de Polignac number, because 12122755 - 2⁵ = 12122723 is a prime.

It is a super-2 number, since 2×12122755² = 293922377580050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6937 + ... + 8506.

It is an arithmetic number, because the mean of its divisors is an integer number (1830114).

Almost surely, 2^12122755 is an apocalyptic number.

12122755 is a deficient number, since it is larger than the sum of its proper divisors (2518157).

12122755 is a wasteful number, since it uses less digits than its factorization.

12122755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15605.

The product of its digits is 1400, while the sum is 25.

The square root of 12122755 is about 3481.7746911597. The cubic root of 12122755 is about 229.7208648987.

Adding to 12122755 its reverse (55722121), we get a palindrome (67844876).

The spelling of 12122755 in words is "twelve million, one hundred twenty-two thousand, seven hundred fifty-five".