1212213333 has 4 divisors (see below), whose sum is σ = 1616284448. Its totient is φ = 808142220.

The previous prime is 1212213313. The next prime is 1212213337. The reversal of 1212213333 is 3333122121.

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 1212213333 - 2⁶ = 1212213269 is a prime.

It is a super-2 number, since 2×1212213333² = 2938922329405937778, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212213337) 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, 202035553 + ... + 202035558.

It is an arithmetic number, because the mean of its divisors is an integer number (404071112).

Almost surely, 2^1212213333 is an apocalyptic number.

It is an amenable number.

1212213333 is a deficient number, since it is larger than the sum of its proper divisors (404071115).

1212213333 is an equidigital number, since it uses as much as digits as its factorization.

1212213333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404071114.

The product of its digits is 648, while the sum is 21.

The square root of 1212213333 is about 34816.8541514020. The cubic root of 1212213333 is about 1066.2515745017.

Adding to 1212213333 its reverse (3333122121), we get a palindrome (4545335454).

The spelling of 1212213333 in words is "one billion, two hundred twelve million, two hundred thirteen thousand, three hundred thirty-three".