12010010981 has 2 divisors, whose sum is σ = 12010010982. Its totient is φ = 12010010980.

The previous prime is 12010010959. The next prime is 12010011001. The reversal of 12010010981 is 18901001021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11144180356 + 865830625 = 105566^2 + 29425^2 .

It is a cyclic number.

It is not a de Polignac number, because 12010010981 - 2¹⁴ = 12009994597 is a prime.

It is a super-2 number, since 2×12010010981² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12010010081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005005490 + 6005005491.

It is an arithmetic number, because the mean of its divisors is an integer number (6005005491).

Almost surely, 2^12010010981 is an apocalyptic number.

It is an amenable number.

12010010981 is a deficient number, since it is larger than the sum of its proper divisors (1).

12010010981 is an equidigital number, since it uses as much as digits as its factorization.

12010010981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 12010010981 in words is "twelve billion, ten million, ten thousand, nine hundred eighty-one".