201221040122023 has 2 divisors, whose sum is σ = 201221040122024. Its totient is φ = 201221040122022.

The previous prime is 201221040122009. The next prime is 201221040122131. The reversal of 201221040122023 is 320221040122102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201221040122023 - 2³⁷ = 201083601168551 is a prime.

It is a super-2 number, since 2×201221040122023² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201221040121985 and 201221040122003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201221040422023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100610520061011 + 100610520061012.

It is an arithmetic number, because the mean of its divisors is an integer number (100610520061012).

Almost surely, 2^{201221040122023} is an apocalyptic number.

201221040122023 is a deficient number, since it is larger than the sum of its proper divisors (1).

201221040122023 is an equidigital number, since it uses as much as digits as its factorization.

201221040122023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 201221040122023 its reverse (320221040122102), we get a palindrome (521442080244125).

The spelling of 201221040122023 in words is "two hundred one trillion, two hundred twenty-one billion, forty million, one hundred twenty-two thousand, twenty-three".