121371967349 has 2 divisors, whose sum is σ = 121371967350. Its totient is φ = 121371967348.

The previous prime is 121371967333. The next prime is 121371967361. The reversal of 121371967349 is 943769173121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116127600625 + 5244366724 = 340775^2 + 72418^2 .

It is a cyclic number.

It is not a de Polignac number, because 121371967349 - 2⁴ = 121371967333 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121371967349.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121371967309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60685983674 + 60685983675.

It is an arithmetic number, because the mean of its divisors is an integer number (60685983675).

Almost surely, 2^121371967349 is an apocalyptic number.

It is an amenable number.

121371967349 is a deficient number, since it is larger than the sum of its proper divisors (1).

121371967349 is an equidigital number, since it uses as much as digits as its factorization.

121371967349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1714608, while the sum is 53.

The spelling of 121371967349 in words is "one hundred twenty-one billion, three hundred seventy-one million, nine hundred sixty-seven thousand, three hundred forty-nine".