201111213441 has 16 divisors (see below), whose sum is σ = 282628647360. Its totient is φ = 127008423360.

The previous prime is 201111213439. The next prime is 201111213467. The reversal of 201111213441 is 144312111102.

It is not a de Polignac number, because 201111213441 - 2¹ = 201111213439 is a prime.

It is a super-2 number, since 2×201111213441² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (201111213431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21803155 + ... + 21812376.

It is an arithmetic number, because the mean of its divisors is an integer number (17664290460).

Almost surely, 2^201111213441 is an apocalyptic number.

It is an amenable number.

201111213441 is a deficient number, since it is larger than the sum of its proper divisors (81517433919).

201111213441 is a wasteful number, since it uses less digits than its factorization.

201111213441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43615616.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 201111213441 its reverse (144312111102), we get a palindrome (345423324543).

The spelling of 201111213441 in words is "two hundred one billion, one hundred eleven million, two hundred thirteen thousand, four hundred forty-one".