121213030331 has 2 divisors, whose sum is σ = 121213030332. Its totient is φ = 121213030330.

The previous prime is 121213030307. The next prime is 121213030333. The reversal of 121213030331 is 133030312121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121213030331 is a prime.

It is a super-2 number, since 2×121213030331² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 121213030333, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (121213030333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60606515165 + 60606515166.

It is an arithmetic number, because the mean of its divisors is an integer number (60606515166).

Almost surely, 2^121213030331 is an apocalyptic number.

121213030331 is a deficient number, since it is larger than the sum of its proper divisors (1).

121213030331 is an equidigital number, since it uses as much as digits as its factorization.

121213030331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 121213030331 its reverse (133030312121), we get a palindrome (254243342452).

The spelling of 121213030331 in words is "one hundred twenty-one billion, two hundred thirteen million, thirty thousand, three hundred thirty-one".