11021219999 has 2 divisors, whose sum is σ = 11021220000. Its totient is φ = 11021219998.

The previous prime is 11021219983. The next prime is 11021220121. The reversal of 11021219999 is 99991212011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11021219999 - 2⁴ = 11021219983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11021219929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5510609999 + 5510610000.

It is an arithmetic number, because the mean of its divisors is an integer number (5510610000).

Almost surely, 2^11021219999 is an apocalyptic number.

11021219999 is a deficient number, since it is larger than the sum of its proper divisors (1).

11021219999 is an equidigital number, since it uses as much as digits as its factorization.

11021219999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26244, while the sum is 44.

The spelling of 11021219999 in words is "eleven billion, twenty-one million, two hundred nineteen thousand, nine hundred ninety-nine".