1221054 has 16 divisors (see below), whose sum is σ = 2570880. Its totient is φ = 385560.

The previous prime is 1221049. The next prime is 1221061. The reversal of 1221054 is 4501221.

It is a congruent number.

It is an unprimeable number.

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, 5242 + ... + 5469.

It is an arithmetic number, because the mean of its divisors is an integer number (160680).

2^1221054 is an apocalyptic number.

1221054 is an abundant number, since it is smaller than the sum of its proper divisors (1349826).

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

1221054 is a wasteful number, since it uses less digits than its factorization.

1221054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10735.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 1221054 is about 1105.0131220940. The cubic root of 1221054 is about 106.8837354783.

Adding to 1221054 its reverse (4501221), we get a palindrome (5722275).

It can be divided in two parts, 122 and 1054, that added together give a triangular number (1176 = T₄₈).

The spelling of 1221054 in words is "one million, two hundred twenty-one thousand, fifty-four".