1121901 has 8 divisors (see below), whose sum is σ = 1631904. Its totient is φ = 679920.

The previous prime is 1121899. The next prime is 1121933. The reversal of 1121901 is 1091211.

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

It is not a de Polignac number, because 1121901 - 2¹ = 1121899 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16966 + ... + 17031.

It is an arithmetic number, because the mean of its divisors is an integer number (203988).

2^1121901 is an apocalyptic number.

1121901 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1121901 is a deficient number, since it is larger than the sum of its proper divisors (510003).

1121901 is a wasteful number, since it uses less digits than its factorization.

1121901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34011.

The product of its (nonzero) digits is 18, while the sum is 15.

The square root of 1121901 is about 1059.1982817207. The cubic root of 1121901 is about 103.9086043694.

It can be divided in two parts, 11 and 21901, that added together give a palindrome (21912).

The spelling of 1121901 in words is "one million, one hundred twenty-one thousand, nine hundred one".