2121120201 has 8 divisors (see below), whose sum is σ = 2904597184. Its totient is φ = 1375861680.

The previous prime is 2121120187. The next prime is 2121120203. The reversal of 2121120201 is 1020211212.

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

It is not a de Polignac number, because 2121120201 - 2⁶ = 2121120137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121120203) 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, 9554485 + ... + 9554706.

It is an arithmetic number, because the mean of its divisors is an integer number (363074648).

Almost surely, 2^2121120201 is an apocalyptic number.

It is an amenable number.

2121120201 is a deficient number, since it is larger than the sum of its proper divisors (783476983).

2121120201 is a wasteful number, since it uses less digits than its factorization.

2121120201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19109231.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 2121120201 is about 46055.6207318933. The cubic root of 2121120201 is about 1284.8578829137.

Adding to 2121120201 its reverse (1020211212), we get a palindrome (3141331413).

The spelling of 2121120201 in words is "two billion, one hundred twenty-one million, one hundred twenty thousand, two hundred one".