20001110100061 has 2 divisors, whose sum is σ = 20001110100062. Its totient is φ = 20001110100060.

The previous prime is 20001110099947. The next prime is 20001110100071. The reversal of 20001110100061 is 16000101110002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11071657308100 + 8929452791961 = 3327410^2 + 2988219^2 .

It is a cyclic number.

It is not a de Polignac number, because 20001110100061 - 2⁹ = 20001110099549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20001110100071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000555050030 + 10000555050031.

It is an arithmetic number, because the mean of its divisors is an integer number (10000555050031).

Almost surely, 2^{20001110100061} is an apocalyptic number.

It is an amenable number.

20001110100061 is a deficient number, since it is larger than the sum of its proper divisors (1).

20001110100061 is an equidigital number, since it uses as much as digits as its factorization.

20001110100061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 20001110100061 its reverse (16000101110002), we get a palindrome (36001211210063).

The spelling of 20001110100061 in words is "twenty trillion, one billion, one hundred ten million, one hundred thousand, sixty-one".