1221484 has 48 divisors (see below), whose sum is σ = 2612736. Its totient is φ = 492800.

The previous prime is 1221469. The next prime is 1221499. The reversal of 1221484 is 4841221.

It is an interprime number because it is at equal distance from previous prime (1221469) and next prime (1221499).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17169 + ... + 17239.

It is an arithmetic number, because the mean of its divisors is an integer number (54432).

2^1221484 is an apocalyptic number.

It is an amenable number.

1221484 is an abundant number, since it is smaller than the sum of its proper divisors (1391252).

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

1221484 is a wasteful number, since it uses less digits than its factorization.

1221484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 124 counting only the distinct ones).

The product of its digits is 512, while the sum is 22.

The square root of 1221484 is about 1105.2076727928. The cubic root of 1221484 is about 106.8962805452.

The spelling of 1221484 in words is "one million, two hundred twenty-one thousand, four hundred eighty-four".