201001221231 has 8 divisors (see below), whose sum is σ = 268042942464. Its totient is φ = 133980157080.

The previous prime is 201001221193. The next prime is 201001221319. The reversal of 201001221231 is 132122100102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 201001221231 - 2¹¹ = 201001219183 is a prime.

It is a super-2 number, since 2×201001221231² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201001221231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201001121231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5141551 + ... + 5180496.

It is an arithmetic number, because the mean of its divisors is an integer number (33505367808).

Almost surely, 2^201001221231 is an apocalyptic number.

201001221231 is a deficient number, since it is larger than the sum of its proper divisors (67041721233).

201001221231 is a wasteful number, since it uses less digits than its factorization.

201001221231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10328541.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 201001221231 its reverse (132122100102), we get a palindrome (333123321333).

The spelling of 201001221231 in words is "two hundred one billion, one million, two hundred twenty-one thousand, two hundred thirty-one".