2000011120981 has 2 divisors, whose sum is σ = 2000011120982. Its totient is φ = 2000011120980.

The previous prime is 2000011120969. The next prime is 2000011121021. The reversal of 2000011120981 is 1890211100002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1912163496100 + 87847624881 = 1382810^2 + 296391^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2000011120981 is a prime.

It is a super-2 number, since 2×2000011120981² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2000011120381) 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, 1000005560490 + 1000005560491.

It is an arithmetic number, because the mean of its divisors is an integer number (1000005560491).

Almost surely, 2^{2000011120981} is an apocalyptic number.

It is an amenable number.

2000011120981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2000011120981 is an equidigital number, since it uses as much as digits as its factorization.

2000011120981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 25.

Adding to 2000011120981 its reverse (1890211100002), we get a palindrome (3890222220983).

The spelling of 2000011120981 in words is "two trillion, eleven million, one hundred twenty thousand, nine hundred eighty-one".