1222533405 has 20 divisors (see below), whose sum is σ = 2191505052. Its totient is φ = 652017600.

The previous prime is 1222533383. The next prime is 1222533413. The reversal of 1222533405 is 5043352221.

It is a happy number.

1222533405 is a `hidden beast` number, since 1 + 2 + 2 + 253 + 3 + 405 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 187881849 + 1034651556 = 13707^2 + 32166^2 .

It is not a de Polignac number, because 1222533405 - 2⁵ = 1222533373 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1508896 + ... + 1509705.

Almost surely, 2^1222533405 is an apocalyptic number.

1222533405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1222533405 is a deficient number, since it is larger than the sum of its proper divisors (968971647).

1222533405 is an equidigital number, since it uses as much as digits as its factorization.

1222533405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3018618 (or 3018609 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 1222533405 is about 34964.7451728166. The cubic root of 1222533405 is about 1069.2688413391.

Adding to 1222533405 its reverse (5043352221), we get a palindrome (6265885626).

The spelling of 1222533405 in words is "one billion, two hundred twenty-two million, five hundred thirty-three thousand, four hundred five".