20020101021223 has 2 divisors, whose sum is σ = 20020101021224. Its totient is φ = 20020101021222.

The previous prime is 20020101021187. The next prime is 20020101021241. The reversal of 20020101021223 is 32212010102002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20020101021223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20020101021197 and 20020101021206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20020101024223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010050510611 + 10010050510612.

It is an arithmetic number, because the mean of its divisors is an integer number (10010050510612).

Almost surely, 2^{20020101021223} is an apocalyptic number.

20020101021223 is a deficient number, since it is larger than the sum of its proper divisors (1).

20020101021223 is an equidigital number, since it uses as much as digits as its factorization.

20020101021223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20020101021223 its reverse (32212010102002), we get a palindrome (52232111123225).

The spelling of 20020101021223 in words is "twenty trillion, twenty billion, one hundred one million, twenty-one thousand, two hundred twenty-three".