11213261751121 has 4 divisors (see below), whose sum is σ = 11213268959232. Its totient is φ = 11213254543012.

The previous prime is 11213261751047. The next prime is 11213261751143. The reversal of 11213261751121 is 12115716231211.

11213261751121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11213261751121 is a prime.

It is a super-3 number, since 3×11213261751121³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11213261751821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196945 + ... + 4739758.

It is an arithmetic number, because the mean of its divisors is an integer number (2803317239808).

Almost surely, 2^{11213261751121} is an apocalyptic number.

It is an amenable number.

11213261751121 is a deficient number, since it is larger than the sum of its proper divisors (7208111).

11213261751121 is an equidigital number, since it uses as much as digits as its factorization.

11213261751121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7208110.

The product of its digits is 5040, while the sum is 34.

Adding to 11213261751121 its reverse (12115716231211), we get a palindrome (23328977982332).

The spelling of 11213261751121 in words is "eleven trillion, two hundred thirteen billion, two hundred sixty-one million, seven hundred fifty-one thousand, one hundred twenty-one".