11091621371 has 2 divisors, whose sum is σ = 11091621372. Its totient is φ = 11091621370.

The previous prime is 11091621341. The next prime is 11091621377. The reversal of 11091621371 is 17312619011.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11091621371 - 2¹⁴ = 11091604987 is a prime.

It is not a weakly prime, because it can be changed into another prime (11091621377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5545810685 + 5545810686.

It is an arithmetic number, because the mean of its divisors is an integer number (5545810686).

Almost surely, 2^11091621371 is an apocalyptic number.

11091621371 is a deficient number, since it is larger than the sum of its proper divisors (1).

11091621371 is an equidigital number, since it uses as much as digits as its factorization.

11091621371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 32.

The spelling of 11091621371 in words is "eleven billion, ninety-one million, six hundred twenty-one thousand, three hundred seventy-one".