11221134012391 has 2 divisors, whose sum is σ = 11221134012392. Its totient is φ = 11221134012390.

The previous prime is 11221134012359. The next prime is 11221134012401. The reversal of 11221134012391 is 19321043112211.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11221134012391 - 2⁵ = 11221134012359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11221134012311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610567006195 + 5610567006196.

It is an arithmetic number, because the mean of its divisors is an integer number (5610567006196).

Almost surely, 2^{11221134012391} is an apocalyptic number.

11221134012391 is a deficient number, since it is larger than the sum of its proper divisors (1).

11221134012391 is an equidigital number, since it uses as much as digits as its factorization.

11221134012391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 31.

The spelling of 11221134012391 in words is "eleven trillion, two hundred twenty-one billion, one hundred thirty-four million, twelve thousand, three hundred ninety-one".