201000011222009 has 4 divisors (see below), whose sum is σ = 205276607205504. Its totient is φ = 196723415238516.

The previous prime is 201000011221987. The next prime is 201000011222071. The reversal of 201000011222009 is 900222110000102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201000011222009 - 2¹² = 201000011217913 is a prime.

It is a super-2 number, since 2×201000011222009² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201000011222609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2138297991677 + ... + 2138297991770.

It is an arithmetic number, because the mean of its divisors is an integer number (51319151801376).

Almost surely, 2^{201000011222009} is an apocalyptic number.

It is an amenable number.

201000011222009 is a deficient number, since it is larger than the sum of its proper divisors (4276595983495).

201000011222009 is an equidigital number, since it uses as much as digits as its factorization.

201000011222009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4276595983494.

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

The spelling of 201000011222009 in words is "two hundred one trillion, eleven million, two hundred twenty-two thousand, nine".