1220332001 has 8 divisors (see below), whose sum is σ = 1397694144. Its totient is φ = 1043727120.

The previous prime is 1220331997. The next prime is 1220332007. The reversal of 1220332001 is 1002330221.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1220332001 - 2² = 1220331997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220332007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185855 + ... + 192308.

It is an arithmetic number, because the mean of its divisors is an integer number (174711768).

Almost surely, 2^1220332001 is an apocalyptic number.

It is an amenable number.

1220332001 is a deficient number, since it is larger than the sum of its proper divisors (177362143).

1220332001 is an equidigital number, since it uses as much as digits as its factorization.

1220332001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378631.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1220332001 is about 34933.2506503474. The cubic root of 1220332001 is about 1068.6266483904.

Adding to 1220332001 its reverse (1002330221), we get a palindrome (2222662222).

The spelling of 1220332001 in words is "one billion, two hundred twenty million, three hundred thirty-two thousand, one".