12101111122 has 8 divisors (see below), whose sum is σ = 19219411836. Its totient is φ = 5694640512.

The previous prime is 12101111119. The next prime is 12101111129. The reversal of 12101111122 is 22111110121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11916123921 + 184987201 = 109161^2 + 13601^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12101111129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177957483 + ... + 177957550.

Almost surely, 2^12101111122 is an apocalyptic number.

12101111122 is a deficient number, since it is larger than the sum of its proper divisors (7118300714).

12101111122 is a wasteful number, since it uses less digits than its factorization.

12101111122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355915052.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12101111122 its reverse (22111110121), we get a palindrome (34212221243).

The spelling of 12101111122 in words is "twelve billion, one hundred one million, one hundred eleven thousand, one hundred twenty-two".