121213230331 has 2 divisors, whose sum is σ = 121213230332. Its totient is φ = 121213230330.

The previous prime is 121213230317. The next prime is 121213230353. The reversal of 121213230331 is 133032312121.

It is an a-pointer prime, because the next prime (121213230353) can be obtained adding 121213230331 to its sum of digits (22).

It is a weak prime.

It is an emirp because it is prime and its reverse (133032312121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121213230331 is a prime.

It is a super-2 number, since 2×121213230331² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121213230301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60606615165 + 60606615166.

It is an arithmetic number, because the mean of its divisors is an integer number (60606615166).

Almost surely, 2^121213230331 is an apocalyptic number.

121213230331 is a deficient number, since it is larger than the sum of its proper divisors (1).

121213230331 is an equidigital number, since it uses as much as digits as its factorization.

121213230331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 121213230331 its reverse (133032312121), we get a palindrome (254245542452).

The spelling of 121213230331 in words is "one hundred twenty-one billion, two hundred thirteen million, two hundred thirty thousand, three hundred thirty-one".