2133223121 has 8 divisors (see below), whose sum is σ = 2281072104. Its totient is φ = 1987859200.

The previous prime is 2133223069. The next prime is 2133223133. The reversal of 2133223121 is 1213223312.

It can be written as a sum of positive squares in 4 ways, for example, as 878292496 + 1254930625 = 29636^2 + 35425^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2133223121 - 2¹⁰ = 2133222097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2133223093 and 2133223102.

It is not an unprimeable number, because it can be changed into a prime (2133223171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 619490 + ... + 622923.

It is an arithmetic number, because the mean of its divisors is an integer number (285134013).

Almost surely, 2^2133223121 is an apocalyptic number.

It is an amenable number.

2133223121 is a deficient number, since it is larger than the sum of its proper divisors (147848983).

2133223121 is a wasteful number, since it uses less digits than its factorization.

2133223121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242531.

The product of its digits is 432, while the sum is 20.

The square root of 2133223121 is about 46186.8284362544. The cubic root of 2133223121 is about 1287.2970105845.

Adding to 2133223121 its reverse (1213223312), we get a palindrome (3346446433).

The spelling of 2133223121 in words is "two billion, one hundred thirty-three million, two hundred twenty-three thousand, one hundred twenty-one".