121102221211 has 4 divisors (see below), whose sum is σ = 122635160800. Its totient is φ = 119569281624.

The previous prime is 121102221209. The next prime is 121102221217. The reversal of 121102221211 is 112122201121.

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 121102221211 - 2¹ = 121102221209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121102221217) 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, 766469676 + ... + 766469833.

It is an arithmetic number, because the mean of its divisors is an integer number (30658790200).

Almost surely, 2^121102221211 is an apocalyptic number.

121102221211 is a deficient number, since it is larger than the sum of its proper divisors (1532939589).

121102221211 is an equidigital number, since it uses as much as digits as its factorization.

121102221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1532939588.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121102221211 its reverse (112122201121), we get a palindrome (233224422332).

The spelling of 121102221211 in words is "one hundred twenty-one billion, one hundred two million, two hundred twenty-one thousand, two hundred eleven".