20113212212641 has 2 divisors, whose sum is σ = 20113212212642. Its totient is φ = 20113212212640.

The previous prime is 20113212212633. The next prime is 20113212212713. The reversal of 20113212212641 is 14621221231102.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16447120805025 + 3666091407616 = 4055505^2 + 1914704^2 .

It is a cyclic number.

It is not a de Polignac number, because 20113212212641 - 2³ = 20113212212633 is a prime.

It is not a weakly prime, because it can be changed into another prime (20113212212141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056606106320 + 10056606106321.

It is an arithmetic number, because the mean of its divisors is an integer number (10056606106321).

Almost surely, 2^{20113212212641} is an apocalyptic number.

It is an amenable number.

20113212212641 is a deficient number, since it is larger than the sum of its proper divisors (1).

20113212212641 is an equidigital number, since it uses as much as digits as its factorization.

20113212212641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 28.

Adding to 20113212212641 its reverse (14621221231102), we get a palindrome (34734433443743).

The spelling of 20113212212641 in words is "twenty trillion, one hundred thirteen billion, two hundred twelve million, two hundred twelve thousand, six hundred forty-one".