2133227921 has 4 divisors (see below), whose sum is σ = 2327157744. Its totient is φ = 1939298100.

The previous prime is 2133227891. The next prime is 2133227939. The reversal of 2133227921 is 1297223312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2133227921 - 2¹⁴ = 2133211537 is a prime.

It is a super-2 number, since 2×2133227921² = 9101322725867964482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2133227951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96964895 + ... + 96964916.

It is an arithmetic number, because the mean of its divisors is an integer number (581789436).

Almost surely, 2^2133227921 is an apocalyptic number.

It is an amenable number.

2133227921 is a deficient number, since it is larger than the sum of its proper divisors (193929823).

2133227921 is a wasteful number, since it uses less digits than its factorization.

2133227921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193929822.

The product of its digits is 9072, while the sum is 32.

The square root of 2133227921 is about 46186.8803990917. The cubic root of 2133227921 is about 1287.2979761064.

The spelling of 2133227921 in words is "two billion, one hundred thirty-three million, two hundred twenty-seven thousand, nine hundred twenty-one".