20113021221127 has 2 divisors, whose sum is σ = 20113021221128. Its totient is φ = 20113021221126.

The previous prime is 20113021221089. The next prime is 20113021221179. The reversal of 20113021221127 is 72112212031102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20113021221127 - 2¹¹ = 20113021219079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20113021222127) 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, 10056510610563 + 10056510610564.

It is an arithmetic number, because the mean of its divisors is an integer number (10056510610564).

Almost surely, 2^{20113021221127} is an apocalyptic number.

20113021221127 is a deficient number, since it is larger than the sum of its proper divisors (1).

20113021221127 is an equidigital number, since it uses as much as digits as its factorization.

20113021221127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 25.

Adding to 20113021221127 its reverse (72112212031102), we get a palindrome (92225233252229).

The spelling of 20113021221127 in words is "twenty trillion, one hundred thirteen billion, twenty-one million, two hundred twenty-one thousand, one hundred twenty-seven".