121222331 has 2 divisors, whose sum is σ = 121222332. Its totient is φ = 121222330.

The previous prime is 121222273. The next prime is 121222357. The reversal of 121222331 is 133222121.

It is a strong prime.

It is an emirp because it is prime and its reverse (133222121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121222331 is a prime.

It is a super-2 number, since 2×121222331² = 29389707066147122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (120222331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60611165 + 60611166.

It is an arithmetic number, because the mean of its divisors is an integer number (60611166).

Almost surely, 2^121222331 is an apocalyptic number.

121222331 is a deficient number, since it is larger than the sum of its proper divisors (1).

121222331 is an equidigital number, since it uses as much as digits as its factorization.

121222331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144, while the sum is 17.

The square root of 121222331 is about 11010.1013165184. The cubic root of 121222331 is about 494.9114979686.

Adding to 121222331 its reverse (133222121), we get a palindrome (254444452).

The spelling of 121222331 in words is "one hundred twenty-one million, two hundred twenty-two thousand, three hundred thirty-one".