10010219981 has 2 divisors, whose sum is σ = 10010219982. Its totient is φ = 10010219980.

The previous prime is 10010219957. The next prime is 10010220049. The reversal of 10010219981 is 18991201001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5421376900 + 4588843081 = 73630^2 + 67741^2 .

It is an emirp because it is prime and its reverse (18991201001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10010219981 - 2⁶ = 10010219917 is a prime.

It is a super-2 number, since 2×10010219981² (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 (10010219911) 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, 5005109990 + 5005109991.

It is an arithmetic number, because the mean of its divisors is an integer number (5005109991).

Almost surely, 2^10010219981 is an apocalyptic number.

It is an amenable number.

10010219981 is a deficient number, since it is larger than the sum of its proper divisors (1).

10010219981 is an equidigital number, since it uses as much as digits as its factorization.

10010219981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 32.

The spelling of 10010219981 in words is "ten billion, ten million, two hundred nineteen thousand, nine hundred eighty-one".