1242221333 has 8 divisors (see below), whose sum is σ = 1253128320. Its totient is φ = 1231341280.

The previous prime is 1242221291. The next prime is 1242221347. The reversal of 1242221333 is 3331222421.

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 1242221333 - 2¹⁴ = 1242204949 is a prime.

It is a super-2 number, since 2×1242221333² = 3086227680320593778, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1242221299 and 1242221308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242221353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92198 + ... + 104808.

It is an arithmetic number, because the mean of its divisors is an integer number (156641040).

Almost surely, 2^1242221333 is an apocalyptic number.

It is an amenable number.

1242221333 is a deficient number, since it is larger than the sum of its proper divisors (10906987).

1242221333 is a wasteful number, since it uses less digits than its factorization.

1242221333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13467.

The product of its digits is 1728, while the sum is 23.

The square root of 1242221333 is about 35245.1604195526. The cubic root of 1242221333 is about 1074.9782099063.

Adding to 1242221333 its reverse (3331222421), we get a palindrome (4573443754).

The spelling of 1242221333 in words is "one billion, two hundred forty-two million, two hundred twenty-one thousand, three hundred thirty-three".