1000020221303 has 4 divisors (see below), whose sum is σ = 1034503677240. Its totient is φ = 965536765368.

The previous prime is 1000020221269. The next prime is 1000020221359. The reversal of 1000020221303 is 3031220200001.

It is a happy number.

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 1000020221303 - 2²⁰ = 1000019172727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000020221393) 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, 17241727925 + ... + 17241727982.

It is an arithmetic number, because the mean of its divisors is an integer number (258625919310).

Almost surely, 2^{1000020221303} is an apocalyptic number.

1000020221303 is a deficient number, since it is larger than the sum of its proper divisors (34483455937).

1000020221303 is an equidigital number, since it uses as much as digits as its factorization.

1000020221303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34483455936.

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

Adding to 1000020221303 its reverse (3031220200001), we get a palindrome (4031240421304).

The spelling of 1000020221303 in words is "one trillion, twenty million, two hundred twenty-one thousand, three hundred three".