121104443221 has 2 divisors, whose sum is σ = 121104443222. Its totient is φ = 121104443220.

The previous prime is 121104443189. The next prime is 121104443227. The reversal of 121104443221 is 122344401121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100936467025 + 20167976196 = 317705^2 + 142014^2 .

It is a cyclic number.

It is not a de Polignac number, because 121104443221 - 2⁵ = 121104443189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121104443227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60552221610 + 60552221611.

It is an arithmetic number, because the mean of its divisors is an integer number (60552221611).

Almost surely, 2^121104443221 is an apocalyptic number.

It is an amenable number.

121104443221 is a deficient number, since it is larger than the sum of its proper divisors (1).

121104443221 is an equidigital number, since it uses as much as digits as its factorization.

121104443221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 121104443221 its reverse (122344401121), we get a palindrome (243448844342).

The spelling of 121104443221 in words is "one hundred twenty-one billion, one hundred four million, four hundred forty-three thousand, two hundred twenty-one".