121232311 has 2 divisors, whose sum is σ = 121232312. Its totient is φ = 121232310.

The previous prime is 121232303. The next prime is 121232347. The reversal of 121232311 is 113232121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121232311 - 2³ = 121232303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121232381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60616155 + 60616156.

It is an arithmetic number, because the mean of its divisors is an integer number (60616156).

Almost surely, 2^121232311 is an apocalyptic number.

121232311 is a deficient number, since it is larger than the sum of its proper divisors (1).

121232311 is an equidigital number, since it uses as much as digits as its factorization.

121232311 is an odious number, because the sum of its binary digits is odd.

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

The square root of 121232311 is about 11010.5545273615. The cubic root of 121232311 is about 494.9250792980.

Adding to 121232311 its reverse (113232121), we get a palindrome (234464432).

The spelling of 121232311 in words is "one hundred twenty-one million, two hundred thirty-two thousand, three hundred eleven".