1222405344 has 60 divisors (see below), whose sum is σ = 3595067784. Its totient is φ = 407467584.

The previous prime is 1222405313. The next prime is 1222405351. The reversal of 1222405344 is 4435042221.

1222405344 is a `hidden beast` number, since 1 + 222 + 405 + 34 + 4 = 666.

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 9 ways as a sum of consecutive naturals, for example, 233212 + ... + 238395.

Almost surely, 2^1222405344 is an apocalyptic number.

It is an amenable number.

1222405344 is an abundant number, since it is smaller than the sum of its proper divisors (2372662440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222405344 is an equidigital number, since it uses as much as digits as its factorization.

1222405344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471629 (or 471612 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 1222405344 is about 34962.9138373792. The cubic root of 1222405344 is about 1069.2315045492.

Adding to 1222405344 its reverse (4435042221), we get a palindrome (5657447565).

The spelling of 1222405344 in words is "one billion, two hundred twenty-two million, four hundred five thousand, three hundred forty-four".