1221042324 has 12 divisors (see below), whose sum is σ = 2849098784. Its totient is φ = 407014104.

The previous prime is 1221042313. The next prime is 1221042337. The reversal of 1221042324 is 4232401221.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 1221042324.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50876752 + ... + 50876775.

Almost surely, 2^1221042324 is an apocalyptic number.

It is an amenable number.

1221042324 is an abundant number, since it is smaller than the sum of its proper divisors (1628056460).

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

1221042324 is a wasteful number, since it uses less digits than its factorization.

1221042324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101753534 (or 101753532 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1221042324 is about 34943.4160322084. The cubic root of 1221042324 is about 1068.8339479492.

Adding to 1221042324 its reverse (4232401221), we get a palindrome (5453443545).

The spelling of 1221042324 in words is "one billion, two hundred twenty-one million, forty-two thousand, three hundred twenty-four".