121221123323 has 2 divisors, whose sum is σ = 121221123324. Its totient is φ = 121221123322.

The previous prime is 121221123301. The next prime is 121221123343. The reversal of 121221123323 is 323321122121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121221123323 - 2⁶ = 121221123259 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (121221123343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60610561661 + 60610561662.

It is an arithmetic number, because the mean of its divisors is an integer number (60610561662).

Almost surely, 2^121221123323 is an apocalyptic number.

121221123323 is a deficient number, since it is larger than the sum of its proper divisors (1).

121221123323 is an equidigital number, since it uses as much as digits as its factorization.

121221123323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 23.

Adding to 121221123323 its reverse (323321122121), we get a palindrome (444542245444).

The spelling of 121221123323 in words is "one hundred twenty-one billion, two hundred twenty-one million, one hundred twenty-three thousand, three hundred twenty-three".