11201121251 has 2 divisors, whose sum is σ = 11201121252. Its totient is φ = 11201121250.

The previous prime is 11201121203. The next prime is 11201121293. The reversal of 11201121251 is 15212110211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11201121251 - 2²⁶ = 11134012387 is a prime.

It is not a weakly prime, because it can be changed into another prime (11201121751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5600560625 + 5600560626.

It is an arithmetic number, because the mean of its divisors is an integer number (5600560626).

Almost surely, 2^11201121251 is an apocalyptic number.

11201121251 is a deficient number, since it is larger than the sum of its proper divisors (1).

11201121251 is an equidigital number, since it uses as much as digits as its factorization.

11201121251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40, while the sum is 17.

Adding to 11201121251 its reverse (15212110211), we get a palindrome (26413231462).

The spelling of 11201121251 in words is "eleven billion, two hundred one million, one hundred twenty-one thousand, two hundred fifty-one".