2100121242 has 8 divisors (see below), whose sum is σ = 4200242496. Its totient is φ = 700040412.

The previous prime is 2100121189. The next prime is 2100121253. The reversal of 2100121242 is 2421210012.

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

2100121242 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175010098 + ... + 175010109.

It is an arithmetic number, because the mean of its divisors is an integer number (525030312).

Almost surely, 2^2100121242 is an apocalyptic number.

2100121242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2100121242 is a wasteful number, since it uses less digits than its factorization.

2100121242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350020212.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 2100121242 is about 45827.0797891378. The cubic root of 2100121242 is about 1280.6038089544.

Adding to 2100121242 its reverse (2421210012), we get a palindrome (4521331254).

The spelling of 2100121242 in words is "two billion, one hundred million, one hundred twenty-one thousand, two hundred forty-two".