2120001211 has 4 divisors (see below), whose sum is σ = 2140991424. Its totient is φ = 2099011000.

The previous prime is 2120001197. The next prime is 2120001229. The reversal of 2120001211 is 1121000212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2120001211 - 2⁷ = 2120001083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120001281) 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, 10494955 + ... + 10495156.

It is an arithmetic number, because the mean of its divisors is an integer number (535247856).

Almost surely, 2^2120001211 is an apocalyptic number.

2120001211 is a deficient number, since it is larger than the sum of its proper divisors (20990213).

2120001211 is a wasteful number, since it uses less digits than its factorization.

2120001211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20990212.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 2120001211 is about 46043.4708835031. The cubic root of 2120001211 is about 1284.6319023176.

Adding to 2120001211 its reverse (1121000212), we get a palindrome (3241001423).

Subtracting from 2120001211 its reverse (1121000212), we obtain a palindrome (999000999).

It can be divided in two parts, 2120001 and 211, that added together give a palindrome (2120212).

The spelling of 2120001211 in words is "two billion, one hundred twenty million, one thousand, two hundred eleven".