108002121 has 4 divisors (see below), whose sum is σ = 144002832. Its totient is φ = 72001412.

The previous prime is 108002117. The next prime is 108002129. The reversal of 108002121 is 121200801.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 121200801 = 3 ⋅40400267.

It is a cyclic number.

It is not a de Polignac number, because 108002121 - 2² = 108002117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 108002121.

It is not an unprimeable number, because it can be changed into a prime (108002129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18000351 + ... + 18000356.

It is an arithmetic number, because the mean of its divisors is an integer number (36000708).

Almost surely, 2^108002121 is an apocalyptic number.

It is an amenable number.

108002121 is a deficient number, since it is larger than the sum of its proper divisors (36000711).

108002121 is an equidigital number, since it uses as much as digits as its factorization.

108002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36000710.

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 108002121 is about 10392.4068915723. The cubic root of 108002121 is about 476.2234330493.

Adding to 108002121 its reverse (121200801), we get a palindrome (229202922).

It can be divided in two parts, 10800 and 2121, that added together give a palindrome (12921).

The spelling of 108002121 in words is "one hundred eight million, two thousand, one hundred twenty-one".