220020221923 has 2 divisors, whose sum is σ = 220020221924. Its totient is φ = 220020221922.

The previous prime is 220020221917. The next prime is 220020222077. The reversal of 220020221923 is 329122020022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220020221923 - 2⁹ = 220020221411 is a prime.

It is not a weakly prime, because it can be changed into another prime (220020221123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110010110961 + 110010110962.

It is an arithmetic number, because the mean of its divisors is an integer number (110010110962).

Almost surely, 2^220020221923 is an apocalyptic number.

220020221923 is a deficient number, since it is larger than the sum of its proper divisors (1).

220020221923 is an equidigital number, since it uses as much as digits as its factorization.

220020221923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 220020221923 its reverse (329122020022), we get a palindrome (549142241945).

The spelling of 220020221923 in words is "two hundred twenty billion, twenty million, two hundred twenty-one thousand, nine hundred twenty-three".