11201212010121 has 64 divisors (see below), whose sum is σ = 18052603699200. Its totient is φ = 6044649152256.

The previous prime is 11201212010077. The next prime is 11201212010147. The reversal of 11201212010121 is 12101021210211.

It is a happy number.

It is not a de Polignac number, because 11201212010121 - 2²⁹ = 11200675139209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11201212010121.

It is not an unprimeable number, because it can be changed into a prime (11201212010321) 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 63 ways as a sum of consecutive naturals, for example, 2075151 + ... + 5168043.

It is an arithmetic number, because the mean of its divisors is an integer number (282071932800).

Almost surely, 2^{11201212010121} is an apocalyptic number.

It is an amenable number.

11201212010121 is a deficient number, since it is larger than the sum of its proper divisors (6851391689079).

11201212010121 is a wasteful number, since it uses less digits than its factorization.

11201212010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3093078.

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

Adding to 11201212010121 its reverse (12101021210211), we get a palindrome (23302233220332).

The spelling of 11201212010121 in words is "eleven trillion, two hundred one billion, two hundred twelve million, ten thousand, one hundred twenty-one".