121212303193 has 2 divisors, whose sum is σ = 121212303194. Its totient is φ = 121212303192.

The previous prime is 121212303103. The next prime is 121212303227. The reversal of 121212303193 is 391303212121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116299414729 + 4912888464 = 341027^2 + 70092^2 .

It is a cyclic number.

It is not a de Polignac number, because 121212303193 - 2⁹ = 121212302681 is a prime.

It is not a weakly prime, because it can be changed into another prime (121212303103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60606151596 + 60606151597.

It is an arithmetic number, because the mean of its divisors is an integer number (60606151597).

Almost surely, 2^121212303193 is an apocalyptic number.

It is an amenable number.

121212303193 is a deficient number, since it is larger than the sum of its proper divisors (1).

121212303193 is an equidigital number, since it uses as much as digits as its factorization.

121212303193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 28.

The spelling of 121212303193 in words is "one hundred twenty-one billion, two hundred twelve million, three hundred three thousand, one hundred ninety-three".