201534040111 has 4 divisors (see below), whose sum is σ = 208483489800. Its totient is φ = 194584590424.

The previous prime is 201534040091. The next prime is 201534040157. The reversal of 201534040111 is 111040435102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201534040111 - 2¹⁵ = 201534007343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201534940111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3474724801 + ... + 3474724858.

It is an arithmetic number, because the mean of its divisors is an integer number (52120872450).

Almost surely, 2^201534040111 is an apocalyptic number.

201534040111 is a deficient number, since it is larger than the sum of its proper divisors (6949449689).

201534040111 is an equidigital number, since it uses as much as digits as its factorization.

201534040111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6949449688.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 201534040111 its reverse (111040435102), we get a palindrome (312574475213).

The spelling of 201534040111 in words is "two hundred one billion, five hundred thirty-four million, forty thousand, one hundred eleven".