201111001101012 has 48 divisors (see below), whose sum is σ = 472132744134912. Its totient is φ = 66626730656640.

The previous prime is 201111001101011. The next prime is 201111001101019. The reversal of 201111001101012 is 210101100111102.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201111001101011) 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, 10471939 + ... + 22624842.

It is an arithmetic number, because the mean of its divisors is an integer number (9836098836144).

Almost surely, 2^{201111001101012} is an apocalyptic number.

It is an amenable number.

201111001101012 is an abundant number, since it is smaller than the sum of its proper divisors (271021743033900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201111001101012 is a wasteful number, since it uses less digits than its factorization.

201111001101012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33099888 (or 33099886 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 201111001101012 its reverse (210101100111102), we get a palindrome (411212101212114).

The spelling of 201111001101012 in words is "two hundred one trillion, one hundred eleven billion, one million, one hundred one thousand, twelve".