11211100969 has 2 divisors, whose sum is σ = 11211100970. Its totient is φ = 11211100968.

The previous prime is 11211100949. The next prime is 11211101093. The reversal of 11211100969 is 96900111211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8115847744 + 3095253225 = 90088^2 + 55635^2 .

It is a cyclic number.

It is not a de Polignac number, because 11211100969 - 2⁵ = 11211100937 is a prime.

It is a super-2 number, since 2×11211100969² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11211100969.

It is not a weakly prime, because it can be changed into another prime (11211100919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605550484 + 5605550485.

It is an arithmetic number, because the mean of its divisors is an integer number (5605550485).

Almost surely, 2^11211100969 is an apocalyptic number.

It is an amenable number.

11211100969 is a deficient number, since it is larger than the sum of its proper divisors (1).

11211100969 is an equidigital number, since it uses as much as digits as its factorization.

11211100969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 31.

The spelling of 11211100969 in words is "eleven billion, two hundred eleven million, one hundred thousand, nine hundred sixty-nine".