121000879 has 2 divisors, whose sum is σ = 121000880. Its totient is φ = 121000878.

The previous prime is 121000877. The next prime is 121000897. The reversal of 121000879 is 978000121.

Together with next prime (121000897) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121000879 - 2¹ = 121000877 is a prime.

Together with 121000877, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121000877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60500439 + 60500440.

It is an arithmetic number, because the mean of its divisors is an integer number (60500440).

Almost surely, 2^121000879 is an apocalyptic number.

121000879 is a deficient number, since it is larger than the sum of its proper divisors (1).

121000879 is an equidigital number, since it uses as much as digits as its factorization.

121000879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 121000879 is about 11000.0399544729. The cubic root of 121000879 is about 494.6099420109.

The spelling of 121000879 in words is "one hundred twenty-one million, eight hundred seventy-nine", and thus it is an aban number.