121882001 has 2 divisors, whose sum is σ = 121882002. Its totient is φ = 121882000.

The previous prime is 121881997. The next prime is 121882003. The reversal of 121882001 is 100288121.

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., 100500625 + 21381376 = 10025^2 + 4624^2 .

It is a cyclic number.

It is not a de Polignac number, because 121882001 - 2² = 121881997 is a prime.

Together with 121882003, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (121882003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60941000 + 60941001.

It is an arithmetic number, because the mean of its divisors is an integer number (60941001).

Almost surely, 2^121882001 is an apocalyptic number.

It is an amenable number.

121882001 is a deficient number, since it is larger than the sum of its proper divisors (1).

121882001 is an equidigital number, since it uses as much as digits as its factorization.

121882001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 23.

The square root of 121882001 is about 11040.0181612169. The cubic root of 121882001 is about 495.8076140478.

The spelling of 121882001 in words is "one hundred twenty-one million, eight hundred eighty-two thousand, one".