1224221746 has 8 divisors (see below), whose sum is σ = 2003271984. Its totient is φ = 556464420.

The previous prime is 1224221743. The next prime is 1224221767. The reversal of 1224221746 is 6471224221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1224221743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27823200 + ... + 27823243.

It is an arithmetic number, because the mean of its divisors is an integer number (250408998).

Almost surely, 2^1224221746 is an apocalyptic number.

1224221746 is a deficient number, since it is larger than the sum of its proper divisors (779050238).

1224221746 is a wasteful number, since it uses less digits than its factorization.

1224221746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55646456.

The product of its digits is 10752, while the sum is 31.

The square root of 1224221746 is about 34988.8803193243. The cubic root of 1224221746 is about 1069.7608415326.

Adding to 1224221746 its reverse (6471224221), we get a palindrome (7695445967).

The spelling of 1224221746 in words is "one billion, two hundred twenty-four million, two hundred twenty-one thousand, seven hundred forty-six".