11021139 has 12 divisors (see below), whose sum is σ = 15973776. Its totient is φ = 7322352.

The previous prime is 11021123. The next prime is 11021147. The reversal of 11021139 is 93112011.

11021139 = 425² + 426² + ... + 478².

11021139 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11021139 - 2⁴ = 11021123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11021119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 922 + ... + 4784.

It is an arithmetic number, because the mean of its divisors is an integer number (1331148).

Almost surely, 2^11021139 is an apocalyptic number.

11021139 is a deficient number, since it is larger than the sum of its proper divisors (4952637).

11021139 is a wasteful number, since it uses less digits than its factorization.

11021139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4186 (or 4183 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

The square root of 11021139 is about 3319.8100849296. The cubic root of 11021139 is about 222.5403806692.

The spelling of 11021139 in words is "eleven million, twenty-one thousand, one hundred thirty-nine".