12122011122158 has 16 divisors (see below), whose sum is σ = 22002978171744. Its totient is φ = 4889550704640.

The previous prime is 12122011122121. The next prime is 12122011122187. The reversal of 12122011122158 is 85122111022121.

It is a self number, because there is not a number n which added to its sum of digits gives 12122011122158.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25466409683 + ... + 25466410158.

It is an arithmetic number, because the mean of its divisors is an integer number (1375186135734).

Almost surely, 2^{12122011122158} is an apocalyptic number.

12122011122158 is a deficient number, since it is larger than the sum of its proper divisors (9880967049586).

12122011122158 is a wasteful number, since it uses less digits than its factorization.

12122011122158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50932819867.

The product of its (nonzero) digits is 1280, while the sum is 29.

Adding to 12122011122158 its reverse (85122111022121), we get a palindrome (97244122144279).

The spelling of 12122011122158 in words is "twelve trillion, one hundred twenty-two billion, eleven million, one hundred twenty-two thousand, one hundred fifty-eight".