2221213233 has 4 divisors (see below), whose sum is σ = 2961617648. Its totient is φ = 1480808820.

The previous prime is 2221213229. The next prime is 2221213301. The reversal of 2221213233 is 3323121222.

It is a happy number.

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 not a de Polignac number, because 2221213233 - 2² = 2221213229 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221213213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 370202203 + ... + 370202208.

It is an arithmetic number, because the mean of its divisors is an integer number (740404412).

Almost surely, 2^2221213233 is an apocalyptic number.

It is an amenable number.

2221213233 is a deficient number, since it is larger than the sum of its proper divisors (740404415).

2221213233 is an equidigital number, since it uses as much as digits as its factorization.

2221213233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740404414.

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

The square root of 2221213233 is about 47129.7489172179. The cubic root of 2221213233 is about 1304.7583475275.

Adding to 2221213233 its reverse (3323121222), we get a palindrome (5544334455).

The spelling of 2221213233 in words is "two billion, two hundred twenty-one million, two hundred thirteen thousand, two hundred thirty-three".