100102121 has 8 divisors (see below), whose sum is σ = 114463104. Its totient is φ = 85756320.

The previous prime is 100102081. The next prime is 100102129. The reversal of 100102121 is 121201001.

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 100102121 - 2¹⁰ = 100101097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100102099 and 100102108.

It is not an unprimeable number, because it can be changed into a prime (100102129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22541 + ... + 26613.

It is an arithmetic number, because the mean of its divisors is an integer number (14307888).

Almost surely, 2^100102121 is an apocalyptic number.

It is an amenable number.

100102121 is a deficient number, since it is larger than the sum of its proper divisors (14360983).

100102121 is an equidigital number, since it uses as much as digits as its factorization.

100102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7591.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 100102121 is about 10005.1047470779. The cubic root of 100102121 is about 464.3168308387.

Adding to 100102121 its reverse (121201001), we get a palindrome (221303122).

The spelling of 100102121 in words is "one hundred million, one hundred two thousand, one hundred twenty-one".