11021217149 has 4 divisors (see below), whose sum is σ = 11023484640. Its totient is φ = 11018949660.

The previous prime is 11021217131. The next prime is 11021217161. The reversal of 11021217149 is 94171212011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94171212011 = 163 ⋅577737497.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11021217149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021210149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1126439 + ... + 1136180.

It is an arithmetic number, because the mean of its divisors is an integer number (2755871160).

Almost surely, 2^11021217149 is an apocalyptic number.

It is an amenable number.

11021217149 is a deficient number, since it is larger than the sum of its proper divisors (2267491).

11021217149 is an equidigital number, since it uses as much as digits as its factorization.

11021217149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2267490.

The product of its (nonzero) digits is 1008, while the sum is 29.

The spelling of 11021217149 in words is "eleven billion, twenty-one million, two hundred seventeen thousand, one hundred forty-nine".