1221234 has 16 divisors (see below), whose sum is σ = 2791488. Its totient is φ = 348912.

The previous prime is 1221223. The next prime is 1221239. The reversal of 1221234 is 4321221.

It is not an unprimeable number, because it can be changed into a prime (1221239) 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, 14497 + ... + 14580.

It is an arithmetic number, because the mean of its divisors is an integer number (174468).

2^1221234 is an apocalyptic number.

1221234 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1221234 is an abundant number, since it is smaller than the sum of its proper divisors (1570254).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1221234 is a wasteful number, since it uses less digits than its factorization.

1221234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29089.

The product of its digits is 96, while the sum is 15.

The square root of 1221234 is about 1105.0945660893. The cubic root of 1221234 is about 106.8889872600. Note that the first 3 decimals are identical.

Adding to 1221234 its reverse (4321221), we get a palindrome (5542455).

It can be divided in two parts, 12212 and 34, that added together give a triangular number (12246 = T₁₅₆).

The spelling of 1221234 in words is "one million, two hundred twenty-one thousand, two hundred thirty-four".