1213324321 has 8 divisors (see below), whose sum is σ = 1346061600. Its totient is φ = 1084326240.

The previous prime is 1213324303. The next prime is 1213324327. The reversal of 1213324321 is 1234233121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1213324321 - 2⁹ = 1213323809 is a prime.

It is a super-2 number, since 2×1213324321² = 2944311815860222082, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1213324292 and 1213324301.

It is not an unprimeable number, because it can be changed into a prime (1213324327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 934116 + ... + 935413.

It is an arithmetic number, because the mean of its divisors is an integer number (168257700).

Almost surely, 2^1213324321 is an apocalyptic number.

1213324321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1213324321 is a deficient number, since it is larger than the sum of its proper divisors (132737279).

1213324321 is a wasteful number, since it uses less digits than its factorization.

1213324321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1869599.

The product of its digits is 864, while the sum is 22.

The square root of 1213324321 is about 34832.8052416110. The cubic root of 1213324321 is about 1066.5772132775.

Adding to 1213324321 its reverse (1234233121), we get a palindrome (2447557442).

The spelling of 1213324321 in words is "one billion, two hundred thirteen million, three hundred twenty-four thousand, three hundred twenty-one".