201112210100121 has 16 divisors (see below), whose sum is σ = 276808748924928. Its totient is φ = 129745524877200.

The previous prime is 201112210100119. The next prime is 201112210100159. The reversal of 201112210100121 is 121001012211102.

It is a happy number.

It is not a de Polignac number, because 201112210100121 - 2¹ = 201112210100119 is a prime.

It is a super-2 number, since 2×201112210100121² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201112210100121.

It is not an unprimeable number, because it can be changed into a prime (201112210100161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32903751 + ... + 38534156.

It is an arithmetic number, because the mean of its divisors is an integer number (17300546807808).

Almost surely, 2^{201112210100121} is an apocalyptic number.

It is an amenable number.

201112210100121 is a deficient number, since it is larger than the sum of its proper divisors (75696538824807).

201112210100121 is a wasteful number, since it uses less digits than its factorization.

201112210100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71468212.

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

Adding to 201112210100121 its reverse (121001012211102), we get a palindrome (322113222311223).

The spelling of 201112210100121 in words is "two hundred one trillion, one hundred twelve billion, two hundred ten million, one hundred thousand, one hundred twenty-one".