121002221011211 has 4 divisors (see below), whose sum is σ = 121003907736624. Its totient is φ = 121000534285800.

The previous prime is 121002221011201. The next prime is 121002221011219. The reversal of 121002221011211 is 112110122200121.

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

It is a cyclic number.

It is not a de Polignac number, because 121002221011211 - 2³⁴ = 120985041142027 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121002221011211.

It is not an unprimeable number, because it can be changed into a prime (121002221011219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 843255095 + ... + 843398576.

It is an arithmetic number, because the mean of its divisors is an integer number (30250976934156).

Almost surely, 2^{121002221011211} is an apocalyptic number.

121002221011211 is a deficient number, since it is larger than the sum of its proper divisors (1686725413).

121002221011211 is an equidigital number, since it uses as much as digits as its factorization.

121002221011211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686725412.

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

Adding to 121002221011211 its reverse (112110122200121), we get a palindrome (233112343211332).

The spelling of 121002221011211 in words is "one hundred twenty-one trillion, two billion, two hundred twenty-one million, eleven thousand, two hundred eleven".