201235531224011 has 4 divisors (see below), whose sum is σ = 205915427299032. Its totient is φ = 196555635148992.

The previous prime is 201235531223983. The next prime is 201235531224017. The reversal of 201235531224011 is 110422135532102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201235531224011 is a prime.

It is a super-2 number, since 2×201235531224011² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201235531224017) 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, 2339948037446 + ... + 2339948037531.

It is an arithmetic number, because the mean of its divisors is an integer number (51478856824758).

Almost surely, 2^{201235531224011} is an apocalyptic number.

201235531224011 is a deficient number, since it is larger than the sum of its proper divisors (4679896075021).

201235531224011 is an equidigital number, since it uses as much as digits as its factorization.

201235531224011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4679896075020.

The product of its (nonzero) digits is 14400, while the sum is 32.

Adding to 201235531224011 its reverse (110422135532102), we get a palindrome (311657666756113).

The spelling of 201235531224011 in words is "two hundred one trillion, two hundred thirty-five billion, five hundred thirty-one million, two hundred twenty-four thousand, eleven".