12122111101012 has 36 divisors (see below), whose sum is σ = 23334665805108. Its totient is φ = 5506001670400.

The previous prime is 12122111100947. The next prime is 12122111101019. The reversal of 12122111101012 is 21010111122121.

It can be written as a sum of positive squares in 2 ways, for example, as 5862577468176 + 6259533632836 = 2421276^2 + 2501906^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122111101019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8542483 + ... + 9859930.

It is an arithmetic number, because the mean of its divisors is an integer number (648185161253).

Almost surely, 2^{12122111101012} is an apocalyptic number.

It is an amenable number.

12122111101012 is a deficient number, since it is larger than the sum of its proper divisors (11212554704096).

12122111101012 is a wasteful number, since it uses less digits than its factorization.

12122111101012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18403800 (or 18403787 counting only the distinct ones).

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

Adding to 12122111101012 its reverse (21010111122121), we get a palindrome (33132222223133).

The spelling of 12122111101012 in words is "twelve trillion, one hundred twenty-two billion, one hundred eleven million, one hundred one thousand, twelve".