10221201009 has 12 divisors (see below), whose sum is σ = 14801915700. Its totient is φ = 6796614624.

The previous prime is 10221200999. The next prime is 10221201019. The reversal of 10221201009 is 90010212201.

It is an interprime number because it is at equal distance from previous prime (10221200999) and next prime (10221201019).

It can be written as a sum of positive squares in 2 ways, for example, as 1149210000 + 9071991009 = 33900^2 + 95247^2 .

It is not a de Polignac number, because 10221201009 - 2⁷ = 10221200881 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10221200982 and 10221201000.

It is not an unprimeable number, because it can be changed into a prime (10221201019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1456254 + ... + 1463255.

It is an arithmetic number, because the mean of its divisors is an integer number (1233492975).

Almost surely, 2^10221201009 is an apocalyptic number.

It is an amenable number.

10221201009 is a deficient number, since it is larger than the sum of its proper divisors (4580714691).

10221201009 is a wasteful number, since it uses less digits than its factorization.

10221201009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2919904 (or 2919901 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The spelling of 10221201009 in words is "ten billion, two hundred twenty-one million, two hundred one thousand, nine".