1221124 has 6 divisors (see below), whose sum is σ = 2136974. Its totient is φ = 610560.

The previous prime is 1221119. The next prime is 1221131. The reversal of 1221124 is 4211221.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 705600 + 515524 = 840^2 + 718^2 .

It is a super-2 number, since 2×1221124² = 2982287646752, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152637 + ... + 152644.

2^1221124 is an apocalyptic number.

It is an amenable number.

1221124 is a deficient number, since it is larger than the sum of its proper divisors (915850).

1221124 is a wasteful number, since it uses less digits than its factorization.

1221124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305285 (or 305283 counting only the distinct ones).

The product of its digits is 32, while the sum is 13.

The square root of 1221124 is about 1105.0447954721. The cubic root of 1221124 is about 106.8857778992.

Adding to 1221124 its reverse (4211221), we get a palindrome (5432345).

The spelling of 1221124 in words is "one million, two hundred twenty-one thousand, one hundred twenty-four".