201001221313 has 8 divisors (see below), whose sum is σ = 207955221480. Its totient is φ = 194048749440.

The previous prime is 201001221193. The next prime is 201001221319. The reversal of 201001221313 is 313122100102.

It can be written as a sum of positive squares in 4 ways, for example, as 83319977104 + 117681244209 = 288652^2 + 343047^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 201001221313 - 2⁹ = 201001220801 is a prime.

It is a super-3 number, since 3×201001221313³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201001221319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111220 + ... + 643717.

It is an arithmetic number, because the mean of its divisors is an integer number (25994402685).

Almost surely, 2^201001221313 is an apocalyptic number.

It is an amenable number.

201001221313 is a deficient number, since it is larger than the sum of its proper divisors (6954000167).

201001221313 is an equidigital number, since it uses as much as digits as its factorization.

201001221313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764147.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 201001221313 its reverse (313122100102), we get a palindrome (514123321415).

The spelling of 201001221313 in words is "two hundred one billion, one million, two hundred twenty-one thousand, three hundred thirteen".