11199121643 has 2 divisors, whose sum is σ = 11199121644. Its totient is φ = 11199121642.

The previous prime is 11199121589. The next prime is 11199121649. The reversal of 11199121643 is 34612199111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11199121643 - 2²⁴ = 11182344427 is a prime.

It is a super-2 number, since 2×11199121643² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11199121597 and 11199121606.

It is not a weakly prime, because it can be changed into another prime (11199121649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5599560821 + 5599560822.

It is an arithmetic number, because the mean of its divisors is an integer number (5599560822).

Almost surely, 2^11199121643 is an apocalyptic number.

11199121643 is a deficient number, since it is larger than the sum of its proper divisors (1).

11199121643 is an equidigital number, since it uses as much as digits as its factorization.

11199121643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 38.

The spelling of 11199121643 in words is "eleven billion, one hundred ninety-nine million, one hundred twenty-one thousand, six hundred forty-three".