1121229 has 16 divisors (see below), whose sum is σ = 1679040. Its totient is φ = 739440.

The previous prime is 1121221. The next prime is 1121231. The reversal of 1121229 is 9221211.

It is not a de Polignac number, because 1121229 - 2³ = 1121221 is a prime.

It is an Ulam 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 (1121221) 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 15 ways as a sum of consecutive naturals, for example, 3379 + ... + 3695.

It is an arithmetic number, because the mean of its divisors is an integer number (104940).

2^1121229 is an apocalyptic number.

It is an amenable number.

1121229 is a deficient number, since it is larger than the sum of its proper divisors (557811).

1121229 is a wasteful number, since it uses less digits than its factorization.

1121229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457 (or 451 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

The square root of 1121229 is about 1058.8810131455. The cubic root of 1121229 is about 103.8878537183.

Subtracting from 1121229 its sum of digits (18), we obtain a palindrome (1121211).

The spelling of 1121229 in words is "one million, one hundred twenty-one thousand, two hundred twenty-nine".