121332233221 has 2 divisors, whose sum is σ = 121332233222. Its totient is φ = 121332233220.

The previous prime is 121332233189. The next prime is 121332233237. The reversal of 121332233221 is 122332233121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78902001025 + 42430232196 = 280895^2 + 205986^2 .

It is a cyclic number.

It is not a de Polignac number, because 121332233221 - 2⁵ = 121332233189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121332233521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60666116610 + 60666116611.

It is an arithmetic number, because the mean of its divisors is an integer number (60666116611).

Almost surely, 2^121332233221 is an apocalyptic number.

It is an amenable number.

121332233221 is a deficient number, since it is larger than the sum of its proper divisors (1).

121332233221 is an equidigital number, since it uses as much as digits as its factorization.

121332233221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 25.

Adding to 121332233221 its reverse (122332233121), we get a palindrome (243664466342).

The spelling of 121332233221 in words is "one hundred twenty-one billion, three hundred thirty-two million, two hundred thirty-three thousand, two hundred twenty-one".