100122861 has 8 divisors (see below), whose sum is σ = 136753344. Its totient is φ = 65120480.

The previous prime is 100122833. The next prime is 100122881. The reversal of 100122861 is 168221001.

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 100122861 - 2⁶ = 100122797 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100122821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 406881 + ... + 407126.

It is an arithmetic number, because the mean of its divisors is an integer number (17094168).

Almost surely, 2^100122861 is an apocalyptic number.

It is an amenable number.

100122861 is a deficient number, since it is larger than the sum of its proper divisors (36630483).

100122861 is an equidigital number, since it uses as much as digits as its factorization.

100122861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814051.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 100122861 is about 10006.1411643050. The cubic root of 100122861 is about 464.3488956474.

Adding to 100122861 its reverse (168221001), we get a palindrome (268343862).

The spelling of 100122861 in words is "one hundred million, one hundred twenty-two thousand, eight hundred sixty-one".