12000122102221 has 64 divisors (see below), whose sum is σ = 14086822980096. Its totient is φ = 10115449344000.

The previous prime is 12000122102179. The next prime is 12000122102261. The reversal of 12000122102221 is 12220122100021.

It is a happy number.

It is not a de Polignac number, because 12000122102221 - 2⁷ = 12000122102093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12000122102195 and 12000122102204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000122102261) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 255532075 + ... + 255579031.

It is an arithmetic number, because the mean of its divisors is an integer number (220106609064).

Almost surely, 2^{12000122102221} is an apocalyptic number.

12000122102221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12000122102221 is a deficient number, since it is larger than the sum of its proper divisors (2086700877875).

12000122102221 is a wasteful number, since it uses less digits than its factorization.

12000122102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47302.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12000122102221 its reverse (12220122100021), we get a palindrome (24220244202242).

It can be divided in two parts, 120001 and 22102221, that added together give a palindrome (22222222).

The spelling of 12000122102221 in words is "twelve trillion, one hundred twenty-two million, one hundred two thousand, two hundred twenty-one".