1122151 has 4 divisors (see below), whose sum is σ = 1128600. Its totient is φ = 1115704.

The previous prime is 1122139. The next prime is 1122157. The reversal of 1122151 is 1512211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1512211 = 31 ⋅48781.

It is a cyclic number.

It is not a de Polignac number, because 1122151 - 2¹⁵ = 1089383 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 (1122157) 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, 2956 + ... + 3313.

It is an arithmetic number, because the mean of its divisors is an integer number (282150).

2^1122151 is an apocalyptic number.

1122151 is a deficient number, since it is larger than the sum of its proper divisors (6449).

1122151 is an equidigital number, since it uses as much as digits as its factorization.

1122151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6448.

The product of its digits is 20, while the sum is 13.

The square root of 1122151 is about 1059.3162889336. The cubic root of 1122151 is about 103.9163219908.

Adding to 1122151 its reverse (1512211), we get a palindrome (2634362).

The spelling of 1122151 in words is "one million, one hundred twenty-two thousand, one hundred fifty-one".