2131211211 has 16 divisors (see below), whose sum is σ = 3045306624. Its totient is φ = 1322301024.

The previous prime is 2131211179. The next prime is 2131211233. The reversal of 2131211211 is 1121121312.

It is not a de Polignac number, because 2131211211 - 2⁵ = 2131211179 is a prime.

It is a super-2 number, since 2×2131211211² = 9084122451784173042, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2131211261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 414841 + ... + 419946.

It is an arithmetic number, because the mean of its divisors is an integer number (190331664).

Almost surely, 2^2131211211 is an apocalyptic number.

2131211211 is a deficient number, since it is larger than the sum of its proper divisors (914095413).

2131211211 is a wasteful number, since it uses less digits than its factorization.

2131211211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834850.

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

The square root of 2131211211 is about 46165.0431712134. The cubic root of 2131211211 is about 1286.8921864878.

Adding to 2131211211 its reverse (1121121312), we get a palindrome (3252332523).

It can be divided in two parts, 21312 and 11211, that added together give a palindrome (32523).

The spelling of 2131211211 in words is "two billion, one hundred thirty-one million, two hundred eleven thousand, two hundred eleven".