11000100010981 has 2 divisors, whose sum is σ = 11000100010982. Its totient is φ = 11000100010980.

The previous prime is 11000100010961. The next prime is 11000100011023. The reversal of 11000100010981 is 18901000100011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8093262557956 + 2906837453025 = 2844866^2 + 1704945^2 .

It is a cyclic number.

It is not a de Polignac number, because 11000100010981 - 2⁷ = 11000100010853 is a prime.

It is a super-2 number, since 2×11000100010981² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11000100010961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500050005490 + 5500050005491.

It is an arithmetic number, because the mean of its divisors is an integer number (5500050005491).

Almost surely, 2^{11000100010981} is an apocalyptic number.

It is an amenable number.

11000100010981 is a deficient number, since it is larger than the sum of its proper divisors (1).

11000100010981 is an equidigital number, since it uses as much as digits as its factorization.

11000100010981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 22.

Adding to 11000100010981 its reverse (18901000100011), we get a palindrome (29901100110992).

The spelling of 11000100010981 in words is "eleven trillion, one hundred million, ten thousand, nine hundred eighty-one".