20021220302303 has 16 divisors (see below), whose sum is σ = 21947064652800. Its totient is φ = 18113056154880.

The previous prime is 20021220302273. The next prime is 20021220302323. The reversal of 20021220302303 is 30320302212002.

It is a cyclic number.

It is not a de Polignac number, because 20021220302303 - 2¹⁶ = 20021220236767 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 (20021220302323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5467343 + ... + 8362671.

It is an arithmetic number, because the mean of its divisors is an integer number (1371691540800).

Almost surely, 2^{20021220302303} is an apocalyptic number.

20021220302303 is a deficient number, since it is larger than the sum of its proper divisors (1925844350497).

20021220302303 is a wasteful number, since it uses less digits than its factorization.

20021220302303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2898382.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 20021220302303 its reverse (30320302212002), we get a palindrome (50341522514305).

The spelling of 20021220302303 in words is "twenty trillion, twenty-one billion, two hundred twenty million, three hundred two thousand, three hundred three".