2123321211 has 12 divisors (see below), whose sum is σ = 3345839640. Its totient is φ = 1286861280.

The previous prime is 2123321203. The next prime is 2123321237. The reversal of 2123321211 is 1121233212.

2123321211 is a `hidden beast` number, since 212 + 332 + 121 + 1 = 666.

It is not a de Polignac number, because 2123321211 - 2³ = 2123321203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2123321201) 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, 10723746 + ... + 10723943.

It is an arithmetic number, because the mean of its divisors is an integer number (278819970).

Almost surely, 2^2123321211 is an apocalyptic number.

2123321211 is a deficient number, since it is larger than the sum of its proper divisors (1222518429).

2123321211 is a wasteful number, since it uses less digits than its factorization.

2123321211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21447706 (or 21447703 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 2123321211 is about 46079.5096653599. The cubic root of 2123321211 is about 1285.3021461926.

Adding to 2123321211 its reverse (1121233212), we get a palindrome (3244554423).

It can be divided in two parts, 21233212 and 11, that multiplied together give a palindrome (233565332).

The spelling of 2123321211 in words is "two billion, one hundred twenty-three million, three hundred twenty-one thousand, two hundred eleven".