11100006221 has 2 divisors, whose sum is σ = 11100006222. Its totient is φ = 11100006220.

The previous prime is 11100006217. The next prime is 11100006233. The reversal of 11100006221 is 12260000111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11057574025 + 42432196 = 105155^2 + 6514^2 .

It is a cyclic number.

It is not a de Polignac number, because 11100006221 - 2² = 11100006217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11100006196 and 11100006205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11100006521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5550003110 + 5550003111.

It is an arithmetic number, because the mean of its divisors is an integer number (5550003111).

Almost surely, 2^11100006221 is an apocalyptic number.

It is an amenable number.

11100006221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11100006221 is an equidigital number, since it uses as much as digits as its factorization.

11100006221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 11100006221 its reverse (12260000111), we get a palindrome (23360006332).

The spelling of 11100006221 in words is "eleven billion, one hundred million, six thousand, two hundred twenty-one".