20223431302221 has 24 divisors (see below), whose sum is σ = 35348518580544. Its totient is φ = 10876467254400.

The previous prime is 20223431302219. The next prime is 20223431302229. The reversal of 20223431302221 is 12220313432202.

20223431302221 is a `hidden beast` number, since 2 + 0 + 2 + 2 + 3 + 431 + 3 + 0 + 2 + 221 = 666.

It is not a de Polignac number, because 20223431302221 - 2¹ = 20223431302219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20223431302229) 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 23 ways as a sum of consecutive naturals, for example, 9441376755 + ... + 9441378896.

It is an arithmetic number, because the mean of its divisors is an integer number (1472854940856).

Almost surely, 2^{20223431302221} is an apocalyptic number.

20223431302221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20223431302221 is a deficient number, since it is larger than the sum of its proper divisors (15125087278323).

20223431302221 is a wasteful number, since it uses less digits than its factorization.

20223431302221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18882755681 (or 18882755678 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 20223431302221 its reverse (12220313432202), we get a palindrome (32443744734423).

The spelling of 20223431302221 in words is "twenty trillion, two hundred twenty-three billion, four hundred thirty-one million, three hundred two thousand, two hundred twenty-one".