10101220210009 has 2 divisors, whose sum is σ = 10101220210010. Its totient is φ = 10101220210008.

The previous prime is 10101220209961. The next prime is 10101220210013. The reversal of 10101220210009 is 90001202210101.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8863886563984 + 1237333646025 = 2977228^2 + 1112355^2 .

It is a cyclic number.

It is not a de Polignac number, because 10101220210009 - 2⁷ = 10101220209881 is a prime.

It is not a weakly prime, because it can be changed into another prime (10101220210019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5050610105004 + 5050610105005.

It is an arithmetic number, because the mean of its divisors is an integer number (5050610105005).

Almost surely, 2^{10101220210009} is an apocalyptic number.

It is an amenable number.

10101220210009 is a deficient number, since it is larger than the sum of its proper divisors (1).

10101220210009 is an equidigital number, since it uses as much as digits as its factorization.

10101220210009 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 19.

The spelling of 10101220210009 in words is "ten trillion, one hundred one billion, two hundred twenty million, two hundred ten thousand, nine".