20020221221023 has 2 divisors, whose sum is σ = 20020221221024. Its totient is φ = 20020221221022.

The previous prime is 20020221221009. The next prime is 20020221221069. The reversal of 20020221221023 is 32012212202002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20020221221023 - 2¹⁷ = 20020221089951 is a prime.

It is a super-2 number, since 2×20020221221023² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20020221221123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010110610511 + 10010110610512.

It is an arithmetic number, because the mean of its divisors is an integer number (10010110610512).

Almost surely, 2^{20020221221023} is an apocalyptic number.

20020221221023 is a deficient number, since it is larger than the sum of its proper divisors (1).

20020221221023 is an equidigital number, since it uses as much as digits as its factorization.

20020221221023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20020221221023 its reverse (32012212202002), we get a palindrome (52032433423025).

The spelling of 20020221221023 in words is "twenty trillion, twenty billion, two hundred twenty-one million, two hundred twenty-one thousand, twenty-three".