20212201223113 has 4 divisors (see below), whose sum is σ = 20219607675540. Its totient is φ = 20204794770688.

The previous prime is 20212201223111. The next prime is 20212201223129. The reversal of 20212201223113 is 31132210221202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14019130989369 + 6193070233744 = 3744213^2 + 2488588^2 .

It is a cyclic number.

It is not a de Polignac number, because 20212201223113 - 2¹ = 20212201223111 is a prime.

It is a super-2 number, since 2×20212201223113² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20212201223111) 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 in 3 ways as a sum of consecutive naturals, for example, 3703222120 + ... + 3703227577.

It is an arithmetic number, because the mean of its divisors is an integer number (5054901918885).

Almost surely, 2^{20212201223113} is an apocalyptic number.

It is an amenable number.

20212201223113 is a deficient number, since it is larger than the sum of its proper divisors (7406452427).

20212201223113 is an equidigital number, since it uses as much as digits as its factorization.

20212201223113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7406452426.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 20212201223113 its reverse (31132210221202), we get a palindrome (51344411444315).

The spelling of 20212201223113 in words is "twenty trillion, two hundred twelve billion, two hundred one million, two hundred twenty-three thousand, one hundred thirteen".