12101221121239 has 2 divisors, whose sum is σ = 12101221121240. Its totient is φ = 12101221121238.

The previous prime is 12101221121177. The next prime is 12101221121263. The reversal of 12101221121239 is 93212112210121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12101221121239 - 2⁷ = 12101221121111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12101221181239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050610560619 + 6050610560620.

It is an arithmetic number, because the mean of its divisors is an integer number (6050610560620).

Almost surely, 2^{12101221121239} is an apocalyptic number.

12101221121239 is a deficient number, since it is larger than the sum of its proper divisors (1).

12101221121239 is an equidigital number, since it uses as much as digits as its factorization.

12101221121239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 28.

The spelling of 12101221121239 in words is "twelve trillion, one hundred one billion, two hundred twenty-one million, one hundred twenty-one thousand, two hundred thirty-nine".