1122155 has 16 divisors (see below), whose sum is σ = 1425600. Its totient is φ = 846720.

The previous prime is 1122139. The next prime is 1122157. The reversal of 1122155 is 5512211.

It is not a de Polignac number, because 1122155 - 2⁴ = 1122139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10241 + ... + 10349.

It is an arithmetic number, because the mean of its divisors is an integer number (89100).

2^1122155 is an apocalyptic number.

1122155 is a deficient number, since it is larger than the sum of its proper divisors (303445).

1122155 is a wasteful number, since it uses less digits than its factorization.

1122155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214.

The product of its digits is 100, while the sum is 17.

The square root of 1122155 is about 1059.3181769421. The cubic root of 1122155 is about 103.9164454635.

Adding to 1122155 its reverse (5512211), we get a palindrome (6634366).

The spelling of 1122155 in words is "one million, one hundred twenty-two thousand, one hundred fifty-five".