121180889 has 2 divisors, whose sum is σ = 121180890. Its totient is φ = 121180888.

The previous prime is 121180853. The next prime is 121180901. The reversal of 121180889 is 988081121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75550864 + 45630025 = 8692^2 + 6755^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121180889 is a prime.

It is not a weakly prime, because it can be changed into another prime (121180289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60590444 + 60590445.

It is an arithmetic number, because the mean of its divisors is an integer number (60590445).

Almost surely, 2^121180889 is an apocalyptic number.

It is an amenable number.

121180889 is a deficient number, since it is larger than the sum of its proper divisors (1).

121180889 is an equidigital number, since it uses as much as digits as its factorization.

121180889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 38.

The square root of 121180889 is about 11008.2191566120. The cubic root of 121180889 is about 494.8550934546.

The spelling of 121180889 in words is "one hundred twenty-one million, one hundred eighty thousand, eight hundred eighty-nine".