1122861 has 4 divisors (see below), whose sum is σ = 1497152. Its totient is φ = 748572.

The previous prime is 1122857. The next prime is 1122887. The reversal of 1122861 is 1682211.

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 an emirpimes, since its reverse is a distinct semiprime: 1682211 = 3 ⋅560737.

It is not a de Polignac number, because 1122861 - 2² = 1122857 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122811) 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, 187141 + ... + 187146.

It is an arithmetic number, because the mean of its divisors is an integer number (374288).

2^1122861 is an apocalyptic number.

It is an amenable number.

1122861 is a deficient number, since it is larger than the sum of its proper divisors (374291).

1122861 is an equidigital number, since it uses as much as digits as its factorization.

1122861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374290.

The product of its digits is 192, while the sum is 21.

The square root of 1122861 is about 1059.6513577588. The cubic root of 1122861 is about 103.9382337875.

The spelling of 1122861 in words is "one million, one hundred twenty-two thousand, eight hundred sixty-one".