101220202010009 has 2 divisors, whose sum is σ = 101220202010010. Its totient is φ = 101220202010008.

The previous prime is 101220202009999. The next prime is 101220202010023. The reversal of 101220202010009 is 900010202022101.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94289382313984 + 6930819696025 = 9710272^2 + 2632645^2 .

It is a cyclic number.

It is not a de Polignac number, because 101220202010009 - 2¹² = 101220202005913 is a prime.

It is not a weakly prime, because it can be changed into another prime (101220202019009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50610101005004 + 50610101005005.

It is an arithmetic number, because the mean of its divisors is an integer number (50610101005005).

Almost surely, 2^{101220202010009} is an apocalyptic number.

It is an amenable number.

101220202010009 is a deficient number, since it is larger than the sum of its proper divisors (1).

101220202010009 is an equidigital number, since it uses as much as digits as its factorization.

101220202010009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 101220202010009 in words is "one hundred one trillion, two hundred twenty billion, two hundred two million, ten thousand, nine".