10012010020981 has 2 divisors, whose sum is σ = 10012010020982. Its totient is φ = 10012010020980.

The previous prime is 10012010020967. The next prime is 10012010021003. The reversal of 10012010020981 is 18902001021001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6356782242756 + 3655227778225 = 2521266^2 + 1911865^2 .

It is a cyclic number.

It is not a de Polignac number, because 10012010020981 - 2⁵ = 10012010020949 is a prime.

It is a super-2 number, since 2×10012010020981² (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 (10012010020931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5006005010490 + 5006005010491.

It is an arithmetic number, because the mean of its divisors is an integer number (5006005010491).

Almost surely, 2^{10012010020981} is an apocalyptic number.

It is an amenable number.

10012010020981 is a deficient number, since it is larger than the sum of its proper divisors (1).

10012010020981 is an equidigital number, since it uses as much as digits as its factorization.

10012010020981 is an evil number, because the sum of its binary digits is even.

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

Adding to 10012010020981 its reverse (18902001021001), we get a palindrome (28914011041982).

The spelling of 10012010020981 in words is "ten trillion, twelve billion, ten million, twenty thousand, nine hundred eighty-one".