201211312110 has 32 divisors (see below), whose sum is σ = 484910930592. Its totient is φ = 53433707520.

The previous prime is 201211312087. The next prime is 201211312117. The reversal of 201211312110 is 11213112102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 201211312110.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201211312117) by changing a digit.

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, 13907799 + ... + 13922258.

It is an arithmetic number, because the mean of its divisors is an integer number (15153466581).

Almost surely, 2^201211312110 is an apocalyptic number.

201211312110 is an abundant number, since it is smaller than the sum of its proper divisors (283699618482).

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

201211312110 is a wasteful number, since it uses less digits than its factorization.

201211312110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27830308.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 201211312110 its reverse (11213112102), we get a palindrome (212424424212).

The spelling of 201211312110 in words is "two hundred one billion, two hundred eleven million, three hundred twelve thousand, one hundred ten".