20020101223 has 2 divisors, whose sum is σ = 20020101224. Its totient is φ = 20020101222.

The previous prime is 20020101217. The next prime is 20020101287. The reversal of 20020101223 is 32210102002.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20020101223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20020101923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010050611 + 10010050612.

It is an arithmetic number, because the mean of its divisors is an integer number (10010050612).

Almost surely, 2^20020101223 is an apocalyptic number.

20020101223 is a deficient number, since it is larger than the sum of its proper divisors (1).

20020101223 is an equidigital number, since it uses as much as digits as its factorization.

20020101223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 20020101223 its reverse (32210102002), we get a palindrome (52230203225).

The spelling of 20020101223 in words is "twenty billion, twenty million, one hundred one thousand, two hundred twenty-three".