12000102122221 has 4 divisors (see below), whose sum is σ = 12003344520444. Its totient is φ = 11996859724000.

The previous prime is 12000102122207. The next prime is 12000102122251. The reversal of 12000102122221 is 12222120100021.

It is a happy number.

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 4028028930025 + 7972073192196 = 2006995^2 + 2823486^2 .

It is a cyclic number.

It is not a de Polignac number, because 12000102122221 - 2⁵ = 12000102122189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12000102122195 and 12000102122204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000102122201) 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, 1621193560 + ... + 1621200961.

It is an arithmetic number, because the mean of its divisors is an integer number (3000836130111).

Almost surely, 2^{12000102122221} is an apocalyptic number.

It is an amenable number.

12000102122221 is a deficient number, since it is larger than the sum of its proper divisors (3242398223).

12000102122221 is an equidigital number, since it uses as much as digits as its factorization.

12000102122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3242398222.

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

Adding to 12000102122221 its reverse (12222120100021), we get a palindrome (24222222222242).

The spelling of 12000102122221 in words is "twelve trillion, one hundred two million, one hundred twenty-two thousand, two hundred twenty-one".