1220421022003 has 4 divisors (see below), whose sum is σ = 1220496293880. Its totient is φ = 1220345750128.

The previous prime is 1220421022001. The next prime is 1220421022013. The reversal of 1220421022003 is 3002201240221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1220421022003 - 2¹ = 1220421022001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220421022001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37611613 + ... + 37644046.

It is an arithmetic number, because the mean of its divisors is an integer number (305124073470).

Almost surely, 2^{1220421022003} is an apocalyptic number.

1220421022003 is a deficient number, since it is larger than the sum of its proper divisors (75271877).

1220421022003 is an equidigital number, since it uses as much as digits as its factorization.

1220421022003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75271876.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 1220421022003 its reverse (3002201240221), we get a palindrome (4222622262224).

The spelling of 1220421022003 in words is "one trillion, two hundred twenty billion, four hundred twenty-one million, twenty-two thousand, three".