101010010010981 has 2 divisors, whose sum is σ = 101010010010982. Its totient is φ = 101010010010980.

The previous prime is 101010010010977. The next prime is 101010010011151. The reversal of 101010010010981 is 189010010010101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89177029202881 + 11832980808100 = 9443359^2 + 3439910^2 .

It is a cyclic number.

It is not a de Polignac number, because 101010010010981 - 2² = 101010010010977 is a prime.

It is a super-2 number, since 2×101010010010981² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101010010010911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50505005005490 + 50505005005491.

It is an arithmetic number, because the mean of its divisors is an integer number (50505005005491).

Almost surely, 2^{101010010010981} is an apocalyptic number.

It is an amenable number.

101010010010981 is a deficient number, since it is larger than the sum of its proper divisors (1).

101010010010981 is an equidigital number, since it uses as much as digits as its factorization.

101010010010981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 23.

The spelling of 101010010010981 in words is "one hundred one trillion, ten billion, ten million, ten thousand, nine hundred eighty-one".