1121897 has 8 divisors (see below), whose sum is σ = 1288896. Its totient is φ = 956592.

The previous prime is 1121867. The next prime is 1121899. The reversal of 1121897 is 7981211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1121897 - 2⁶ = 1121833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1121899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1778 + ... + 2324.

It is an arithmetic number, because the mean of its divisors is an integer number (161112).

2^1121897 is an apocalyptic number.

It is an amenable number.

1121897 is a deficient number, since it is larger than the sum of its proper divisors (166999).

1121897 is an equidigital number, since it uses as much as digits as its factorization.

1121897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847.

The product of its digits is 1008, while the sum is 29.

The square root of 1121897 is about 1059.1963934984. The cubic root of 1121897 is about 103.9084808781.

The spelling of 1121897 in words is "one million, one hundred twenty-one thousand, eight hundred ninety-seven".