11005360921 has 2 divisors, whose sum is σ = 11005360922. Its totient is φ = 11005360920.

The previous prime is 11005360903. The next prime is 11005360931. The reversal of 11005360921 is 12906350011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9513856521 + 1491504400 = 97539^2 + 38620^2 .

It is a cyclic number.

It is not a de Polignac number, because 11005360921 - 2²⁹ = 10468490009 is a prime.

It is a super-2 number, since 2×11005360921² (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 11005360921.

It is not a weakly prime, because it can be changed into another prime (11005360931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5502680460 + 5502680461.

It is an arithmetic number, because the mean of its divisors is an integer number (5502680461).

Almost surely, 2^11005360921 is an apocalyptic number.

It is an amenable number.

11005360921 is a deficient number, since it is larger than the sum of its proper divisors (1).

11005360921 is an equidigital number, since it uses as much as digits as its factorization.

11005360921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 28.

The spelling of 11005360921 in words is "eleven billion, five million, three hundred sixty thousand, nine hundred twenty-one".