10212209989 has 2 divisors, whose sum is σ = 10212209990. Its totient is φ = 10212209988.

The previous prime is 10212209983. The next prime is 10212210067. The reversal of 10212209989 is 98990221201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9360562500 + 851647489 = 96750^2 + 29183^2 .

It is an emirp because it is prime and its reverse (98990221201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10212209989 - 2³ = 10212209981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10212209981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5106104994 + 5106104995.

It is an arithmetic number, because the mean of its divisors is an integer number (5106104995).

Almost surely, 2^10212209989 is an apocalyptic number.

It is an amenable number.

10212209989 is a deficient number, since it is larger than the sum of its proper divisors (1).

10212209989 is an equidigital number, since it uses as much as digits as its factorization.

10212209989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 43.

The spelling of 10212209989 in words is "ten billion, two hundred twelve million, two hundred nine thousand, nine hundred eighty-nine".