11211200009 has 2 divisors, whose sum is σ = 11211200010. Its totient is φ = 11211200008.

The previous prime is 11211199991. The next prime is 11211200027. The reversal of 11211200009 is 90000211211.

It is a balanced prime because it is at equal distance from previous prime (11211199991) and next prime (11211200027).

It can be written as a sum of positive squares in only one way, i.e., 11097990409 + 113209600 = 105347^2 + 10640^2 .

It is a cyclic number.

It is not a de Polignac number, because 11211200009 - 2¹² = 11211195913 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11211200009.

It is not a weakly prime, because it can be changed into another prime (11211208009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605600004 + 5605600005.

It is an arithmetic number, because the mean of its divisors is an integer number (5605600005).

Almost surely, 2^11211200009 is an apocalyptic number.

It is an amenable number.

11211200009 is a deficient number, since it is larger than the sum of its proper divisors (1).

11211200009 is an equidigital number, since it uses as much as digits as its factorization.

11211200009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 17.

The spelling of 11211200009 in words is "eleven billion, two hundred eleven million, two hundred thousand, nine".