20112021103189 has 2 divisors, whose sum is σ = 20112021103190. Its totient is φ = 20112021103188.

The previous prime is 20112021103103. The next prime is 20112021103231. The reversal of 20112021103189 is 98130112021102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20072487734289 + 39533368900 = 4480233^2 + 198830^2 .

It is a cyclic number.

It is not a de Polignac number, because 20112021103189 - 2⁷ = 20112021103061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20112021103189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20112021109189) 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, 10056010551594 + 10056010551595.

It is an arithmetic number, because the mean of its divisors is an integer number (10056010551595).

Almost surely, 2^{20112021103189} is an apocalyptic number.

It is an amenable number.

20112021103189 is a deficient number, since it is larger than the sum of its proper divisors (1).

20112021103189 is an equidigital number, since it uses as much as digits as its factorization.

20112021103189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 31.

The spelling of 20112021103189 in words is "twenty trillion, one hundred twelve billion, twenty-one million, one hundred three thousand, one hundred eighty-nine".