121000877 has 2 divisors, whose sum is σ = 121000878. Its totient is φ = 121000876.

The previous prime is 121000837. The next prime is 121000879. The reversal of 121000877 is 778000121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117202276 + 3798601 = 10826^2 + 1949^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121000877 is a prime.

Together with 121000879, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121000879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60500438 + 60500439.

It is an arithmetic number, because the mean of its divisors is an integer number (60500439).

Almost surely, 2^121000877 is an apocalyptic number.

It is an amenable number.

121000877 is a deficient number, since it is larger than the sum of its proper divisors (1).

121000877 is an equidigital number, since it uses as much as digits as its factorization.

121000877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 784, while the sum is 26.

The square root of 121000877 is about 11000.0398635641. The cubic root of 121000877 is about 494.6099392858.

Adding to 121000877 its reverse (778000121), we get a palindrome (899000998).

The spelling of 121000877 in words is "one hundred twenty-one million, eight hundred seventy-seven", and thus it is an aban number.