1222398533 has 4 divisors (see below), whose sum is σ = 1230602700. Its totient is φ = 1214194368.

The previous prime is 1222398509. The next prime is 1222398547. The reversal of 1222398533 is 3358932221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 804686689 + 417711844 = 28367^2 + 20438^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222398533 - 2⁶ = 1222398469 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222398553) 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 3 ways as a sum of consecutive naturals, for example, 4101860 + ... + 4102157.

It is an arithmetic number, because the mean of its divisors is an integer number (307650675).

Almost surely, 2^1222398533 is an apocalyptic number.

It is an amenable number.

1222398533 is a deficient number, since it is larger than the sum of its proper divisors (8204167).

1222398533 is an equidigital number, since it uses as much as digits as its factorization.

1222398533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8204166.

The product of its digits is 77760, while the sum is 38.

The square root of 1222398533 is about 34962.8164340346. The cubic root of 1222398533 is about 1069.2295186969.

The spelling of 1222398533 in words is "one billion, two hundred twenty-two million, three hundred ninety-eight thousand, five hundred thirty-three".