20303012223021 has 64 divisors (see below), whose sum is σ = 29722155724800. Its totient is φ = 12225792983040.

The previous prime is 20303012223019. The next prime is 20303012223023. The reversal of 20303012223021 is 12032221030302.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20303012223019) and next prime (20303012223023).

It is not a de Polignac number, because 20303012223021 - 2¹ = 20303012223019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20303012223023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8519936796 + ... + 8519939178.

It is an arithmetic number, because the mean of its divisors is an integer number (464408683200).

Almost surely, 2^{20303012223021} is an apocalyptic number.

It is an amenable number.

20303012223021 is a deficient number, since it is larger than the sum of its proper divisors (9419143501779).

20303012223021 is a wasteful number, since it uses less digits than its factorization.

20303012223021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5026.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 20303012223021 its reverse (12032221030302), we get a palindrome (32335233253323).

The spelling of 20303012223021 in words is "twenty trillion, three hundred three billion, twelve million, two hundred twenty-three thousand, twenty-one".