11221299997 has 2 divisors, whose sum is σ = 11221299998. Its totient is φ = 11221299996.

The previous prime is 11221299983. The next prime is 11221300159. The reversal of 11221299997 is 79999212211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10873067076 + 348232921 = 104274^2 + 18661^2 .

It is a cyclic number.

It is not a de Polignac number, because 11221299997 - 2¹¹ = 11221297949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11221299917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610649998 + 5610649999.

It is an arithmetic number, because the mean of its divisors is an integer number (5610649999).

Almost surely, 2^11221299997 is an apocalyptic number.

It is an amenable number.

11221299997 is a deficient number, since it is larger than the sum of its proper divisors (1).

11221299997 is an equidigital number, since it uses as much as digits as its factorization.

11221299997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 367416, while the sum is 52.

The spelling of 11221299997 in words is "eleven billion, two hundred twenty-one million, two hundred ninety-nine thousand, nine hundred ninety-seven".