11217987203 has 2 divisors, whose sum is σ = 11217987204. Its totient is φ = 11217987202.

The previous prime is 11217987173. The next prime is 11217987229. The reversal of 11217987203 is 30278971211.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11217987203 - 2¹² = 11217983107 is a prime.

It is not a weakly prime, because it can be changed into another prime (11217987233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5608993601 + 5608993602.

It is an arithmetic number, because the mean of its divisors is an integer number (5608993602).

Almost surely, 2^11217987203 is an apocalyptic number.

11217987203 is a deficient number, since it is larger than the sum of its proper divisors (1).

11217987203 is an equidigital number, since it uses as much as digits as its factorization.

11217987203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 41.

The spelling of 11217987203 in words is "eleven billion, two hundred seventeen million, nine hundred eighty-seven thousand, two hundred three".