201201123011 has 16 divisors (see below), whose sum is σ = 239118704640. Its totient is φ = 165639455520.

The previous prime is 201201123007. The next prime is 201201123031. The reversal of 201201123011 is 110321102102.

It is not a de Polignac number, because 201201123011 - 2² = 201201123007 is a prime.

It is a super-2 number, since 2×201201123011² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201201123031) 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, 2555831 + ... + 2633376.

It is an arithmetic number, because the mean of its divisors is an integer number (14944919040).

Almost surely, 2^201201123011 is an apocalyptic number.

201201123011 is a deficient number, since it is larger than the sum of its proper divisors (37917581629).

201201123011 is a wasteful number, since it uses less digits than its factorization.

201201123011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5189434.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 201201123011 its reverse (110321102102), we get a palindrome (311522225113).

The spelling of 201201123011 in words is "two hundred one billion, two hundred one million, one hundred twenty-three thousand, eleven".