11212010231121 has 144 divisors (see below), whose sum is σ = 19547745984000. Its totient is φ = 6168138439680.

The previous prime is 11212010231119. The next prime is 11212010231153. The reversal of 11212010231121 is 12113201021211.

It is a happy number.

11212010231121 is a `hidden beast` number, since 112 + 1 + 201 + 0 + 231 + 121 = 666.

It is not a de Polignac number, because 11212010231121 - 2¹ = 11212010231119 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11212010231094 and 11212010231103.

It is not an unprimeable number, because it can be changed into a prime (11212010251121) 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 143 ways as a sum of consecutive naturals, for example, 2298953935 + ... + 2298958811.

It is an arithmetic number, because the mean of its divisors is an integer number (135748236000).

Almost surely, 2^{11212010231121} is an apocalyptic number.

It is an amenable number.

11212010231121 is a deficient number, since it is larger than the sum of its proper divisors (8335735752879).

11212010231121 is a wasteful number, since it uses less digits than its factorization.

11212010231121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5764 (or 5754 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 11212010231121 its reverse (12113201021211), we get a palindrome (23325211252332).

The spelling of 11212010231121 in words is "eleven trillion, two hundred twelve billion, ten million, two hundred thirty-one thousand, one hundred twenty-one".