2123212533 has 16 divisors (see below), whose sum is σ = 3080150976. Its totient is φ = 1293120000.

The previous prime is 2123212529. The next prime is 2123212541. The reversal of 2123212533 is 3352123212.

It is a happy number.

It is not a de Polignac number, because 2123212533 - 2² = 2123212529 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123212633) 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, 276843 + ... + 284408.

It is an arithmetic number, because the mean of its divisors is an integer number (192509436).

Almost surely, 2^2123212533 is an apocalyptic number.

It is an amenable number.

2123212533 is a deficient number, since it is larger than the sum of its proper divisors (956938443).

2123212533 is a wasteful number, since it uses less digits than its factorization.

2123212533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561364.

The product of its digits is 2160, while the sum is 24.

The square root of 2123212533 is about 46078.3304059511. The cubic root of 2123212533 is about 1285.2802172683.

Adding to 2123212533 its reverse (3352123212), we get a palindrome (5475335745).

The spelling of 2123212533 in words is "two billion, one hundred twenty-three million, two hundred twelve thousand, five hundred thirty-three".