2133221131 has 4 divisors (see below), whose sum is σ = 2134365592. Its totient is φ = 2132076672.

The previous prime is 2133221071. The next prime is 2133221137. The reversal of 2133221131 is 1311223312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2133221131 - 2²⁹ = 1596350219 is a prime.

It is a super-2 number, since 2×2133221131² = 9101264787489838322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2133221099 and 2133221108.

It is not an unprimeable number, because it can be changed into a prime (2133221137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 569430 + ... + 573163.

It is an arithmetic number, because the mean of its divisors is an integer number (533591398).

Almost surely, 2^2133221131 is an apocalyptic number.

2133221131 is a deficient number, since it is larger than the sum of its proper divisors (1144461).

2133221131 is a wasteful number, since it uses less digits than its factorization.

2133221131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144460.

The product of its digits is 216, while the sum is 19.

The square root of 2133221131 is about 46186.8068933110. The cubic root of 2133221131 is about 1287.2966102948.

Adding to 2133221131 its reverse (1311223312), we get a palindrome (3444444443).

The spelling of 2133221131 in words is "two billion, one hundred thirty-three million, two hundred twenty-one thousand, one hundred thirty-one".