2121211311 has 8 divisors (see below), whose sum is σ = 2830573104. Its totient is φ = 1412995200.

The previous prime is 2121211289. The next prime is 2121211327. The reversal of 2121211311 is 1131121212.

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

It is not a de Polignac number, because 2121211311 - 2¹⁸ = 2120949167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121211111) 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, 282090 + ... + 289511.

It is an arithmetic number, because the mean of its divisors is an integer number (353821638).

Almost surely, 2^2121211311 is an apocalyptic number.

2121211311 is a deficient number, since it is larger than the sum of its proper divisors (709361793).

2121211311 is a wasteful number, since it uses less digits than its factorization.

2121211311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572841.

The product of its digits is 24, while the sum is 15.

The square root of 2121211311 is about 46056.6098513558. The cubic root of 2121211311 is about 1284.8762791249.

Adding to 2121211311 its reverse (1131121212), we get a palindrome (3252332523).

Subtracting from 2121211311 its reverse (1131121212), we obtain a palindrome (990090099).

It can be divided in two parts, 21212 and 11311, that added together give a palindrome (32523).

The spelling of 2121211311 in words is "two billion, one hundred twenty-one million, two hundred eleven thousand, three hundred eleven".