12101112122 has 16 divisors (see below), whose sum is σ = 20844021600. Its totient is φ = 5211005040.

The previous prime is 12101112109. The next prime is 12101112139. The reversal of 12101112122 is 22121110121.

It is a junction number, because it is equal to n+sod(n) for n = 12101112097 and 12101112106.

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, 14474597 + ... + 14475432.

It is an arithmetic number, because the mean of its divisors is an integer number (1302751350).

Almost surely, 2^12101112122 is an apocalyptic number.

12101112122 is a deficient number, since it is larger than the sum of its proper divisors (8742909478).

12101112122 is a wasteful number, since it uses less digits than its factorization.

12101112122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28950061.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12101112122 its reverse (22121110121), we get a palindrome (34222222243).

The spelling of 12101112122 in words is "twelve billion, one hundred one million, one hundred twelve thousand, one hundred twenty-two".