11201211121157 has 2 divisors, whose sum is σ = 11201211121158. Its totient is φ = 11201211121156.

The previous prime is 11201211121091. The next prime is 11201211121171. The reversal of 11201211121157 is 75112111210211.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10715501090116 + 485710031041 = 3273454^2 + 696929^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11201211121157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11201211121357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5600605560578 + 5600605560579.

It is an arithmetic number, because the mean of its divisors is an integer number (5600605560579).

Almost surely, 2^{11201211121157} is an apocalyptic number.

It is an amenable number.

11201211121157 is a deficient number, since it is larger than the sum of its proper divisors (1).

11201211121157 is an equidigital number, since it uses as much as digits as its factorization.

11201211121157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 26.

Adding to 11201211121157 its reverse (75112111210211), we get a palindrome (86313322331368).

The spelling of 11201211121157 in words is "eleven trillion, two hundred one billion, two hundred eleven million, one hundred twenty-one thousand, one hundred fifty-seven".