201120021110081 has 2 divisors, whose sum is σ = 201120021110082. Its totient is φ = 201120021110080.

The previous prime is 201120021109963. The next prime is 201120021110089. The reversal of 201120021110081 is 180011120021102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 158926993890625 + 42193027219456 = 12606625^2 + 6495616^2 .

It is a cyclic number.

It is not a de Polignac number, because 201120021110081 - 2²² = 201120016915777 is a prime.

It is a super-2 number, since 2×201120021110081² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (201120021110089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100560010555040 + 100560010555041.

It is an arithmetic number, because the mean of its divisors is an integer number (100560010555041).

Almost surely, 2^{201120021110081} is an apocalyptic number.

It is an amenable number.

201120021110081 is a deficient number, since it is larger than the sum of its proper divisors (1).

201120021110081 is an equidigital number, since it uses as much as digits as its factorization.

201120021110081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 201120021110081 its reverse (180011120021102), we get a palindrome (381131141131183).

The spelling of 201120021110081 in words is "two hundred one trillion, one hundred twenty billion, twenty-one million, one hundred ten thousand, eighty-one".