201221010111102 has 16 divisors (see below), whose sum is σ = 402476662870032. Its totient is φ = 67067896262400.

The previous prime is 201221010111083. The next prime is 201221010111103. The reversal of 201221010111102 is 201111010122102.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201221010111103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1443368149 + ... + 1443507552.

It is an arithmetic number, because the mean of its divisors is an integer number (25154791429377).

Almost surely, 2^{201221010111102} is an apocalyptic number.

201221010111102 is an abundant number, since it is smaller than the sum of its proper divisors (201255652758930).

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

201221010111102 is a wasteful number, since it uses less digits than its factorization.

201221010111102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2886887323.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 201221010111102 its reverse (201111010122102), we get a palindrome (402332020233204).

The spelling of 201221010111102 in words is "two hundred one trillion, two hundred twenty-one billion, ten million, one hundred eleven thousand, one hundred two".