122187401 has 8 divisors (see below), whose sum is σ = 139861824. Its totient is φ = 104567760.

The previous prime is 122187397. The next prime is 122187409. The reversal of 122187401 is 104781221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122187401 - 2² = 122187397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (122187409) 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 in 7 ways as a sum of consecutive naturals, for example, 8795 + ... + 17936.

It is an arithmetic number, because the mean of its divisors is an integer number (17482728).

Almost surely, 2^122187401 is an apocalyptic number.

It is an amenable number.

122187401 is a deficient number, since it is larger than the sum of its proper divisors (17674423).

122187401 is an equidigital number, since it uses as much as digits as its factorization.

122187401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27391.

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 122187401 is about 11053.8410066366. The cubic root of 122187401 is about 496.2213840576.

The spelling of 122187401 in words is "one hundred twenty-two million, one hundred eighty-seven thousand, four hundred one".