10201009 has 12 divisors (see below), whose sum is σ = 12625536. Its totient is φ = 8070192.

The previous prime is 10201007. The next prime is 10201013. The reversal of 10201009 is 90010201.

It is not a de Polignac number, because 10201009 - 2¹ = 10201007 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 10201009.

It is not an unprimeable number, because it can be changed into a prime (10201001) 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, 3129 + ... + 5494.

It is an arithmetic number, because the mean of its divisors is an integer number (1052128).

Almost surely, 2^10201009 is an apocalyptic number.

It is an amenable number.

10201009 is a deficient number, since it is larger than the sum of its proper divisors (2424527).

10201009 is an equidigital number, since it uses as much as digits as its factorization.

10201009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8656 (or 8643 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 10201009 is about 3193.9018457053. The cubic root of 10201009 is about 216.8774393389.

It can be divided in two parts, 1020100 and 9, that multiplied together give a square (9180900 = 3030²).

The spelling of 10201009 in words is "ten million, two hundred one thousand, nine".