10221211201009 has 4 divisors (see below), whose sum is σ = 10222394083300. Its totient is φ = 10220028318720.

The previous prime is 10221211200979. The next prime is 10221211201027. The reversal of 10221211201009 is 90010211212201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5685363360000 + 4535847841009 = 2384400^2 + 2129753^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10221211201009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10221211201049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 591428184 + ... + 591445465.

It is an arithmetic number, because the mean of its divisors is an integer number (2555598520825).

Almost surely, 2^{10221211201009} is an apocalyptic number.

It is an amenable number.

10221211201009 is a deficient number, since it is larger than the sum of its proper divisors (1182882291).

10221211201009 is an equidigital number, since it uses as much as digits as its factorization.

10221211201009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182882290.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 10221211201009 in words is "ten trillion, two hundred twenty-one billion, two hundred eleven million, two hundred one thousand, nine".