20223404320021 has 16 divisors (see below), whose sum is σ = 24249140558848. Its totient is φ = 16500171225600.

The previous prime is 20223404319971. The next prime is 20223404320033. The reversal of 20223404320021 is 12002340432202.

It is a cyclic number.

It is not a de Polignac number, because 20223404320021 - 2¹⁵ = 20223404287253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20223404320081) 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, 763883580 + ... + 763910053.

It is an arithmetic number, because the mean of its divisors is an integer number (1515571284928).

Almost surely, 2^{20223404320021} is an apocalyptic number.

It is an amenable number.

20223404320021 is a deficient number, since it is larger than the sum of its proper divisors (4025736238827).

20223404320021 is a wasteful number, since it uses less digits than its factorization.

20223404320021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1527793732.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 20223404320021 its reverse (12002340432202), we get a palindrome (32225744752223).

The spelling of 20223404320021 in words is "twenty trillion, two hundred twenty-three billion, four hundred four million, three hundred twenty thousand, twenty-one".