2221121133 has 36 divisors (see below), whose sum is σ = 4030257504. Its totient is φ = 1153825200.

The previous prime is 2221121129. The next prime is 2221121173. The reversal of 2221121133 is 3311211222.

2221121133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2221121133 - 2² = 2221121129 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 (2221121173) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 138063 + ... + 153308.

Almost surely, 2^2221121133 is an apocalyptic number.

It is an amenable number.

2221121133 is a deficient number, since it is larger than the sum of its proper divisors (1809136371).

2221121133 is a wasteful number, since it uses less digits than its factorization.

2221121133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291406 (or 291392 counting only the distinct ones).

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

The square root of 2221121133 is about 47128.7718172243. The cubic root of 2221121133 is about 1304.7403138537.

Adding to 2221121133 its reverse (3311211222), we get a palindrome (5532332355).

The spelling of 2221121133 in words is "two billion, two hundred twenty-one million, one hundred twenty-one thousand, one hundred thirty-three".