121211323 has 2 divisors, whose sum is σ = 121211324. Its totient is φ = 121211322.

The previous prime is 121211273. The next prime is 121211347. The reversal of 121211323 is 323112121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121211323 - 2⁹ = 121210811 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121211297 and 121211306.

It is not a weakly prime, because it can be changed into another prime (121211353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60605661 + 60605662.

It is an arithmetic number, because the mean of its divisors is an integer number (60605662).

Almost surely, 2^121211323 is an apocalyptic number.

121211323 is a deficient number, since it is larger than the sum of its proper divisors (1).

121211323 is an equidigital number, since it uses as much as digits as its factorization.

121211323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72, while the sum is 16.

The square root of 121211323 is about 11009.6014005958. The cubic root of 121211323 is about 494.8965168161.

Adding to 121211323 its reverse (323112121), we get a palindrome (444323444).

The spelling of 121211323 in words is "one hundred twenty-one million, two hundred eleven thousand, three hundred twenty-three".