11010100921 has 2 divisors, whose sum is σ = 11010100922. Its totient is φ = 11010100920.

The previous prime is 11010100891. The next prime is 11010100931. The reversal of 11010100921 is 12900101011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8709555625 + 2300545296 = 93325^2 + 47964^2 .

It is a cyclic number.

It is not a de Polignac number, because 11010100921 - 2⁷ = 11010100793 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11010100895 and 11010100904.

It is not a weakly prime, because it can be changed into another prime (11010100931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505050460 + 5505050461.

It is an arithmetic number, because the mean of its divisors is an integer number (5505050461).

Almost surely, 2^11010100921 is an apocalyptic number.

It is an amenable number.

11010100921 is a deficient number, since it is larger than the sum of its proper divisors (1).

11010100921 is an equidigital number, since it uses as much as digits as its factorization.

11010100921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 16.

Adding to 11010100921 its reverse (12900101011), we get a palindrome (23910201932).

The spelling of 11010100921 in words is "eleven billion, ten million, one hundred thousand, nine hundred twenty-one".