1220303001 has 4 divisors (see below), whose sum is σ = 1627070672. Its totient is φ = 813535332.

The previous prime is 1220302999. The next prime is 1220303009. The reversal of 1220303001 is 1003030221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1220303001 - 2¹ = 1220302999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220303009) 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, 203383831 + ... + 203383836.

It is an arithmetic number, because the mean of its divisors is an integer number (406767668).

Almost surely, 2^1220303001 is an apocalyptic number.

It is an amenable number.

1220303001 is a deficient number, since it is larger than the sum of its proper divisors (406767671).

1220303001 is an equidigital number, since it uses as much as digits as its factorization.

1220303001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406767670.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1220303001 is about 34932.8355705631. The cubic root of 1220303001 is about 1068.6181833666.

Adding to 1220303001 its reverse (1003030221), we get a palindrome (2223333222).

The spelling of 1220303001 in words is "one billion, two hundred twenty million, three hundred three thousand, one".