11021157 has 16 divisors (see below), whose sum is σ = 18660480. Its totient is φ = 6297696.

The previous prime is 11021147. The next prime is 11021167. The reversal of 11021157 is 75112011.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11021147) and next prime (11021167).

It is not a de Polignac number, because 11021157 - 2¹¹ = 11019109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021147) 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 15 ways as a sum of consecutive naturals, for example, 28968 + ... + 29345.

It is an arithmetic number, because the mean of its divisors is an integer number (1166280).

Almost surely, 2^11021157 is an apocalyptic number.

It is an amenable number.

11021157 is a deficient number, since it is larger than the sum of its proper divisors (7639323).

11021157 is an equidigital number, since it uses as much as digits as its factorization.

11021157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58329 (or 58323 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 18.

The square root of 11021157 is about 3319.8127959269. The cubic root of 11021157 is about 222.5405018219.

Adding to 11021157 its reverse (75112011), we get a palindrome (86133168).

The spelling of 11021157 in words is "eleven million, twenty-one thousand, one hundred fifty-seven".