1220321452 has 12 divisors (see below), whose sum is σ = 2440642960. Its totient is φ = 522994896.

The previous prime is 1220321447. The next prime is 1220321483. The reversal of 1220321452 is 2541230221.

It is a happy number.

1220321452 is an admirable number.

It is a super-2 number, since 2×1220321452² = 2978368892422776608, which contains 22 as substring.

It is an unprimeable number.

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, 21791427 + ... + 21791482.

Almost surely, 2^1220321452 is an apocalyptic number.

It is an amenable number.

1220321452 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1220321452 is a wasteful number, since it uses less digits than its factorization.

1220321452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43582920 (or 43582918 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1220321452 is about 34933.0996620684. The cubic root of 1220321452 is about 1068.6235691805.

Adding to 1220321452 its reverse (2541230221), we get a palindrome (3761551673).

The spelling of 1220321452 in words is "one billion, two hundred twenty million, three hundred twenty-one thousand, four hundred fifty-two".