11215401051161 has 2 divisors, whose sum is σ = 11215401051162. Its totient is φ = 11215401051160.

The previous prime is 11215401051133. The next prime is 11215401051163. The reversal of 11215401051161 is 16115010451211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11209478979136 + 5922072025 = 3348056^2 + 76955^2 .

It is a cyclic number.

It is not a de Polignac number, because 11215401051161 - 2³⁴ = 11198221181977 is a prime.

Together with 11215401051163, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11215401051163) 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 as a sum of consecutive naturals, namely, 5607700525580 + 5607700525581.

It is an arithmetic number, because the mean of its divisors is an integer number (5607700525581).

Almost surely, 2^{11215401051161} is an apocalyptic number.

It is an amenable number.

11215401051161 is a deficient number, since it is larger than the sum of its proper divisors (1).

11215401051161 is an equidigital number, since it uses as much as digits as its factorization.

11215401051161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 29.

The spelling of 11215401051161 in words is "eleven trillion, two hundred fifteen billion, four hundred one million, fifty-one thousand, one hundred sixty-one".