20121200100143 has 2 divisors, whose sum is σ = 20121200100144. Its totient is φ = 20121200100142.

The previous prime is 20121200100121. The next prime is 20121200100161. The reversal of 20121200100143 is 34100100212102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20121200100143 - 2²⁰ = 20121199051567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20121200120143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060600050071 + 10060600050072.

It is an arithmetic number, because the mean of its divisors is an integer number (10060600050072).

Almost surely, 2^{20121200100143} is an apocalyptic number.

20121200100143 is a deficient number, since it is larger than the sum of its proper divisors (1).

20121200100143 is an equidigital number, since it uses as much as digits as its factorization.

20121200100143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 20121200100143 its reverse (34100100212102), we get a palindrome (54221300312245).

The spelling of 20121200100143 in words is "twenty trillion, one hundred twenty-one billion, two hundred million, one hundred thousand, one hundred forty-three".