11131201200121 has 2 divisors, whose sum is σ = 11131201200122. Its totient is φ = 11131201200120.

The previous prime is 11131201200113. The next prime is 11131201200131. The reversal of 11131201200121 is 12100210213111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10701141987600 + 430059212521 = 3271260^2 + 655789^2 .

It is an emirp because it is prime and its reverse (12100210213111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11131201200121 - 2³ = 11131201200113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11131201200095 and 11131201200104.

It is not a weakly prime, because it can be changed into another prime (11131201200101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5565600600060 + 5565600600061.

It is an arithmetic number, because the mean of its divisors is an integer number (5565600600061).

Almost surely, 2^{11131201200121} is an apocalyptic number.

It is an amenable number.

11131201200121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11131201200121 is an equidigital number, since it uses as much as digits as its factorization.

11131201200121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 11131201200121 its reverse (12100210213111), we get a palindrome (23231411413232).

The spelling of 11131201200121 in words is "eleven trillion, one hundred thirty-one billion, two hundred one million, two hundred thousand, one hundred twenty-one".