121229391307 has 2 divisors, whose sum is σ = 121229391308. Its totient is φ = 121229391306.

The previous prime is 121229391253. The next prime is 121229391317. The reversal of 121229391307 is 703193922121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121229391307 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121229391307.

It is not a weakly prime, because it can be changed into another prime (121229391317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60614695653 + 60614695654.

It is an arithmetic number, because the mean of its divisors is an integer number (60614695654).

Almost surely, 2^121229391307 is an apocalyptic number.

121229391307 is a deficient number, since it is larger than the sum of its proper divisors (1).

121229391307 is an equidigital number, since it uses as much as digits as its factorization.

121229391307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 40.

The spelling of 121229391307 in words is "one hundred twenty-one billion, two hundred twenty-nine million, three hundred ninety-one thousand, three hundred seven".