10101010100981 has 2 divisors, whose sum is σ = 10101010100982. Its totient is φ = 10101010100980.

The previous prime is 10101010100941. The next prime is 10101010101011. The reversal of 10101010100981 is 18900101010101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9636988922500 + 464021178481 = 3104350^2 + 681191^2 .

It is a cyclic number.

It is not a de Polignac number, because 10101010100981 - 2⁶ = 10101010100917 is a prime.

It is a super-2 number, since 2×10101010100981² (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 (10101010100921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5050505050490 + 5050505050491.

It is an arithmetic number, because the mean of its divisors is an integer number (5050505050491).

Almost surely, 2^{10101010100981} is an apocalyptic number.

It is an amenable number.

10101010100981 is a deficient number, since it is larger than the sum of its proper divisors (1).

10101010100981 is an equidigital number, since it uses as much as digits as its factorization.

10101010100981 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 23.

The spelling of 10101010100981 in words is "ten trillion, one hundred one billion, ten million, one hundred thousand, nine hundred eighty-one".