1121001 has 8 divisors (see below), whose sum is σ = 1708224.
Its totient is φ = 640560.
The previous prime is 1120993. The next prime is 1121011. The reversal of 1121001 is 1001211.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 1121001 - 23 = 1120993 is a prime.
It is not an unprimeable number, because it can be changed into a prime (1121011) 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, 26670 + ... + 26711.
It is an arithmetic number, because the mean of its divisors is an integer number (213528).
21121001 is an apocalyptic number.
It is an amenable number.
1121001 is a deficient number, since it is larger than the sum of its proper divisors (587223).
1121001 is an equidigital number, since it uses as much as digits as its factorization.
1121001 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 53391.
The product of its (nonzero) digits is 2, while the sum is 6.
The square root of 1121001 is about 1058.7733468500.
The cubic root of 1121001 is about 103.8808114352.
Adding to 1121001 its reverse (1001211), we get a palindrome (2122212).
Multiplying 1121001 by its reverse (1001211), we get a palindrome (1122358532211).
It can be divided in two parts, 112100 and 1, that added together give a triangular number (112101 = T473).
The spelling of 1121001 in words is "one million, one hundred twenty-one thousand, one".