121111212122 has 16 divisors (see below), whose sum is σ = 184007068800. Its totient is φ = 59775861600.

The previous prime is 121111212121. The next prime is 121111212143. The reversal of 121111212122 is 221212111121.

121111212122 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 121111212122.

It is not an unprimeable number, because it can be changed into a prime (121111212121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 652454 + ... + 817262.

It is an arithmetic number, because the mean of its divisors is an integer number (11500441800).

Almost surely, 2^121111212122 is an apocalyptic number.

121111212122 is a deficient number, since it is larger than the sum of its proper divisors (62895856678).

121111212122 is a wasteful number, since it uses less digits than its factorization.

121111212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169541.

The product of its digits is 32, while the sum is 17.

Adding to 121111212122 its reverse (221212111121), we get a palindrome (342323323243).

The spelling of 121111212122 in words is "one hundred twenty-one billion, one hundred eleven million, two hundred twelve thousand, one hundred twenty-two".