12122112210101 has 4 divisors (see below), whose sum is σ = 12125106067500. Its totient is φ = 12119118352704.

The previous prime is 12122112210073. The next prime is 12122112210113. The reversal of 12122112210101 is 10101221122121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4414831322500 + 7707280887601 = 2101150^2 + 2776199^2 .

It is a cyclic number.

It is not a de Polignac number, because 12122112210101 - 2¹⁴ = 12122112193717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12122112210101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122112210001) 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, 1496922626 + ... + 1496930723.

It is an arithmetic number, because the mean of its divisors is an integer number (3031276516875).

Almost surely, 2^{12122112210101} is an apocalyptic number.

It is an amenable number.

12122112210101 is a deficient number, since it is larger than the sum of its proper divisors (2993857399).

12122112210101 is an equidigital number, since it uses as much as digits as its factorization.

12122112210101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2993857398.

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

Adding to 12122112210101 its reverse (10101221122121), we get a palindrome (22223333332222).

The spelling of 12122112210101 in words is "twelve trillion, one hundred twenty-two billion, one hundred twelve million, two hundred ten thousand, one hundred one".