121000111323391 has 2 divisors, whose sum is σ = 121000111323392. Its totient is φ = 121000111323390.

The previous prime is 121000111323373. The next prime is 121000111323409. The reversal of 121000111323391 is 193323111000121.

It is a balanced prime because it is at equal distance from previous prime (121000111323373) and next prime (121000111323409).

It is an emirp because it is prime and its reverse (193323111000121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121000111323391 - 2⁷ = 121000111323263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121000111323691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60500055661695 + 60500055661696.

It is an arithmetic number, because the mean of its divisors is an integer number (60500055661696).

Almost surely, 2^{121000111323391} is an apocalyptic number.

121000111323391 is a deficient number, since it is larger than the sum of its proper divisors (1).

121000111323391 is an equidigital number, since it uses as much as digits as its factorization.

121000111323391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 28.

The spelling of 121000111323391 in words is "one hundred twenty-one trillion, one hundred eleven million, three hundred twenty-three thousand, three hundred ninety-one".