2221212333 has 16 divisors (see below), whose sum is σ = 3143525760. Its totient is φ = 1390281216.

The previous prime is 2221212319. The next prime is 2221212361. The reversal of 2221212333 is 3332121222.

It is a happy number.

It is not a de Polignac number, because 2221212333 - 2⁴ = 2221212317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221212313) 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, 32385 + ... + 74102.

It is an arithmetic number, because the mean of its divisors is an integer number (196470360).

Almost surely, 2^2221212333 is an apocalyptic number.

It is an amenable number.

2221212333 is a deficient number, since it is larger than the sum of its proper divisors (922313427).

2221212333 is a wasteful number, since it uses less digits than its factorization.

2221212333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106916.

The product of its digits is 864, while the sum is 21.

The square root of 2221212333 is about 47129.7393691075. The cubic root of 2221212333 is about 1304.7581713051.

Adding to 2221212333 its reverse (3332121222), we get a palindrome (5553333555).

The spelling of 2221212333 in words is "two billion, two hundred twenty-one million, two hundred twelve thousand, three hundred thirty-three".