121431222193 has 2 divisors, whose sum is σ = 121431222194. Its totient is φ = 121431222192.

The previous prime is 121431222191. The next prime is 121431222239. The reversal of 121431222193 is 391222134121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120761810064 + 669412129 = 347508^2 + 25873^2 .

It is a cyclic number.

It is not a de Polignac number, because 121431222193 - 2¹ = 121431222191 is a prime.

Together with 121431222191, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (121431222191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60715611096 + 60715611097.

It is an arithmetic number, because the mean of its divisors is an integer number (60715611097).

Almost surely, 2^121431222193 is an apocalyptic number.

It is an amenable number.

121431222193 is a deficient number, since it is larger than the sum of its proper divisors (1).

121431222193 is an equidigital number, since it uses as much as digits as its factorization.

121431222193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 31.

The spelling of 121431222193 in words is "one hundred twenty-one billion, four hundred thirty-one million, two hundred twenty-two thousand, one hundred ninety-three".