20210342221123 has 2 divisors, whose sum is σ = 20210342221124. Its totient is φ = 20210342221122.

The previous prime is 20210342221103. The next prime is 20210342221177. The reversal of 20210342221123 is 32112224301202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20210342221123 - 2⁹ = 20210342220611 is a prime.

It is a super-2 number, since 2×20210342221123² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20210342221103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105171110561 + 10105171110562.

It is an arithmetic number, because the mean of its divisors is an integer number (10105171110562).

Almost surely, 2^{20210342221123} is an apocalyptic number.

20210342221123 is a deficient number, since it is larger than the sum of its proper divisors (1).

20210342221123 is an equidigital number, since it uses as much as digits as its factorization.

20210342221123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 20210342221123 its reverse (32112224301202), we get a palindrome (52322566522325).

The spelling of 20210342221123 in words is "twenty trillion, two hundred ten billion, three hundred forty-two million, two hundred twenty-one thousand, one hundred twenty-three".