121886879 has 2 divisors, whose sum is σ = 121886880. Its totient is φ = 121886878.

The previous prime is 121886851. The next prime is 121886953. The reversal of 121886879 is 978688121.

It is a weak prime.

It is an emirp because it is prime and its reverse (978688121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121886879 is a prime.

It is a super-2 number, since 2×121886879² = 29712822544721282, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121816879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60943439 + 60943440.

It is an arithmetic number, because the mean of its divisors is an integer number (60943440).

Almost surely, 2^121886879 is an apocalyptic number.

121886879 is a deficient number, since it is larger than the sum of its proper divisors (1).

121886879 is an equidigital number, since it uses as much as digits as its factorization.

121886879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 387072, while the sum is 50.

The square root of 121886879 is about 11040.2390825561. The cubic root of 121886879 is about 495.8142284159.

The spelling of 121886879 in words is "one hundred twenty-one million, eight hundred eighty-six thousand, eight hundred seventy-nine".