2121442211 has 12 divisors (see below), whose sum is σ = 2477646360. Its totient is φ = 1811124000.

The previous prime is 2121442199. The next prime is 2121442217. The reversal of 2121442211 is 1122441212.

It is not a de Polignac number, because 2121442211 - 2¹⁰ = 2121441187 is a prime.

It is a super-2 number, since 2×2121442211² = 9001034109225137042, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2121442217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73946 + ... + 98543.

It is an arithmetic number, because the mean of its divisors is an integer number (206470530).

Almost surely, 2^2121442211 is an apocalyptic number.

2121442211 is a deficient number, since it is larger than the sum of its proper divisors (356204149).

2121442211 is a wasteful number, since it uses less digits than its factorization.

2121442211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172754 (or 172747 counting only the distinct ones).

The product of its digits is 256, while the sum is 20.

The square root of 2121442211 is about 46059.1164808879. The cubic root of 2121442211 is about 1284.9228982692.

Adding to 2121442211 its reverse (1122441212), we get a palindrome (3243883423).

Subtracting from 2121442211 its reverse (1122441212), we obtain a palindrome (999000999).

The spelling of 2121442211 in words is "two billion, one hundred twenty-one million, four hundred forty-two thousand, two hundred eleven".