1222421533 has 8 divisors (see below), whose sum is σ = 1294758648. Its totient is φ = 1150132224.

The previous prime is 1222421513. The next prime is 1222421579. The reversal of 1222421533 is 3351242221.

It can be written as a sum of positive squares in 4 ways, for example, as 445294404 + 777127129 = 21102^2 + 27877^2 .

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 1222421533 - 2¹³ = 1222413341 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1222421498 and 1222421507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222421513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49885 + ... + 70237.

It is an arithmetic number, because the mean of its divisors is an integer number (161844831).

Almost surely, 2^1222421533 is an apocalyptic number.

It is an amenable number.

1222421533 is a deficient number, since it is larger than the sum of its proper divisors (72337115).

1222421533 is a wasteful number, since it uses less digits than its factorization.

1222421533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23903.

The product of its digits is 2880, while the sum is 25.

The square root of 1222421533 is about 34963.1453533574. The cubic root of 1222421533 is about 1069.2362246727.

Adding to 1222421533 its reverse (3351242221), we get a palindrome (4573663754).

The spelling of 1222421533 in words is "one billion, two hundred twenty-two million, four hundred twenty-one thousand, five hundred thirty-three".