201231101110 has 32 divisors (see below), whose sum is σ = 396473499072. Its totient is φ = 73082666880.

The previous prime is 201231101101. The next prime is 201231101173. The reversal of 201231101110 is 11101132102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12680034 + ... + 12695893.

It is an arithmetic number, because the mean of its divisors is an integer number (12389796846).

Almost surely, 2^201231101110 is an apocalyptic number.

201231101110 is a deficient number, since it is larger than the sum of its proper divisors (195242397962).

201231101110 is a wasteful number, since it uses less digits than its factorization.

201231101110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25376008.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 201231101110 its reverse (11101132102), we get a palindrome (212332233212).

The spelling of 201231101110 in words is "two hundred one billion, two hundred thirty-one million, one hundred one thousand, one hundred ten".