2121120211 has 8 divisors (see below), whose sum is σ = 2480513024. Its totient is φ = 1775821320.

The previous prime is 2121120203. The next prime is 2121120229. The reversal of 2121120211 is 1120211212.

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

It is not a de Polignac number, because 2121120211 - 2³ = 2121120203 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2121120191 and 2121120200.

It is not an unprimeable number, because it can be changed into a prime (2121120611) 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, 3523155 + ... + 3523756.

It is an arithmetic number, because the mean of its divisors is an integer number (310064128).

Almost surely, 2^2121120211 is an apocalyptic number.

2121120211 is a deficient number, since it is larger than the sum of its proper divisors (359392813).

2121120211 is an equidigital number, since it uses as much as digits as its factorization.

2121120211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7046961.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 2121120211 is about 46055.6208404577. The cubic root of 2121120211 is about 1284.8578849328.

Adding to 2121120211 its reverse (1120211212), we get a palindrome (3241331423).

It can be divided in two parts, 212 and 1120211, that multiplied together give a palindrome (237484732).

The spelling of 2121120211 in words is "two billion, one hundred twenty-one million, one hundred twenty thousand, two hundred eleven".