11201209979 has 2 divisors, whose sum is σ = 11201209980. Its totient is φ = 11201209978.

The previous prime is 11201209949. The next prime is 11201209993. The reversal of 11201209979 is 97990210211.

It is a strong prime.

It is an emirp because it is prime and its reverse (97990210211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11201209979 - 2²⁰ = 11200161403 is a prime.

It is not a weakly prime, because it can be changed into another prime (11201209909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5600604989 + 5600604990.

It is an arithmetic number, because the mean of its divisors is an integer number (5600604990).

Almost surely, 2^11201209979 is an apocalyptic number.

11201209979 is a deficient number, since it is larger than the sum of its proper divisors (1).

11201209979 is an equidigital number, since it uses as much as digits as its factorization.

11201209979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 41.

The spelling of 11201209979 in words is "eleven billion, two hundred one million, two hundred nine thousand, nine hundred seventy-nine".