121103303221 has 2 divisors, whose sum is σ = 121103303222. Its totient is φ = 121103303220.

The previous prime is 121103303219. The next prime is 121103303231. The reversal of 121103303221 is 122303301121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113191200721 + 7912102500 = 336439^2 + 88950^2 .

It is a cyclic number.

It is not a de Polignac number, because 121103303221 - 2¹ = 121103303219 is a prime.

Together with 121103303219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121103303231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60551651610 + 60551651611.

It is an arithmetic number, because the mean of its divisors is an integer number (60551651611).

Almost surely, 2^121103303221 is an apocalyptic number.

It is an amenable number.

121103303221 is a deficient number, since it is larger than the sum of its proper divisors (1).

121103303221 is an equidigital number, since it uses as much as digits as its factorization.

121103303221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 121103303221 its reverse (122303301121), we get a palindrome (243406604342).

The spelling of 121103303221 in words is "one hundred twenty-one billion, one hundred three million, three hundred three thousand, two hundred twenty-one".