201213133441 has 8 divisors (see below), whose sum is σ = 218245522824. Its totient is φ = 184758113280.

The previous prime is 201213133379. The next prime is 201213133469. The reversal of 201213133441 is 144331312102.

It can be written as a sum of positive squares in 4 ways, for example, as 12752959041 + 188460174400 = 112929^2 + 434120^2 .

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 201213133441 - 2²³ = 201204744833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201213133241) 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, 144341580 + ... + 144342973.

It is an arithmetic number, because the mean of its divisors is an integer number (27280690353).

Almost surely, 2^201213133441 is an apocalyptic number.

It is an amenable number.

201213133441 is a deficient number, since it is larger than the sum of its proper divisors (17032389383).

201213133441 is a wasteful number, since it uses less digits than its factorization.

201213133441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288684611.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 201213133441 its reverse (144331312102), we get a palindrome (345544445543).

The spelling of 201213133441 in words is "two hundred one billion, two hundred thirteen million, one hundred thirty-three thousand, four hundred forty-one".