11122157 has 4 divisors (see below), whose sum is σ = 11130240. Its totient is φ = 11114076.

The previous prime is 11122141. The next prime is 11122171. The reversal of 11122157 is 75122111.

It is a happy number.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 75122111 = 167 ⋅449833.

It is a cyclic number.

It is not a de Polignac number, because 11122157 - 2⁴ = 11122141 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 (11122187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1403 + ... + 4920.

It is an arithmetic number, because the mean of its divisors is an integer number (2782560).

Almost surely, 2^11122157 is an apocalyptic number.

It is an amenable number.

11122157 is a deficient number, since it is larger than the sum of its proper divisors (8083).

11122157 is an equidigital number, since it uses as much as digits as its factorization.

11122157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8082.

The product of its digits is 140, while the sum is 20.

The square root of 11122157 is about 3334.9898050819. The cubic root of 11122157 is about 223.2182370238.

Adding to 11122157 its reverse (75122111), we get a palindrome (86244268).

The spelling of 11122157 in words is "eleven million, one hundred twenty-two thousand, one hundred fifty-seven".