1221314024 has 24 divisors (see below), whose sum is σ = 2663836290. Its totient is φ = 523420128.

The previous prime is 1221314023. The next prime is 1221314063. The reversal of 1221314024 is 4204131221.

It can be written as a sum of positive squares in only one way, i.e., 787924900 + 433389124 = 28070^2 + 20818^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1221313987 and 1221314005.

It is not an unprimeable number, because it can be changed into a prime (1221314023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1557407 + ... + 1558190.

Almost surely, 2^1221314024 is an apocalyptic number.

1221314024 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1221314024 is an abundant number, since it is smaller than the sum of its proper divisors (1442522266).

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

1221314024 is a wasteful number, since it uses less digits than its factorization.

1221314024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3115617 (or 3115606 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1221314024 is about 34947.3035297432. The cubic root of 1221314024 is about 1068.9132191972.

Adding to 1221314024 its reverse (4204131221), we get a palindrome (5425445245).

The spelling of 1221314024 in words is "one billion, two hundred twenty-one million, three hundred fourteen thousand, twenty-four".