1122157 has 2 divisors, whose sum is σ = 1122158. Its totient is φ = 1122156.

The previous prime is 1122139. The next prime is 1122179. The reversal of 1122157 is 7512211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1121481 + 676 = 1059^2 + 26^2 .

It is a cyclic number.

It is not a de Polignac number, because 1122157 - 2⁷ = 1122029 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1122137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561078 + 561079.

It is an arithmetic number, because the mean of its divisors is an integer number (561079).

2^1122157 is an apocalyptic number.

It is an amenable number.

1122157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122157 is an equidigital number, since it uses as much as digits as its factorization.

1122157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 140, while the sum is 19.

The square root of 1122157 is about 1059.3191209451. The cubic root of 1122157 is about 103.9165071997.

Adding to 1122157 its reverse (7512211), we get a palindrome (8634368).

The spelling of 1122157 in words is "one million, one hundred twenty-two thousand, one hundred fifty-seven".