1322642321 has 32 divisors (see below), whose sum is σ = 1805051136. Its totient is φ = 935712000.

The previous prime is 1322642309. The next prime is 1322642323. The reversal of 1322642321 is 1232462231.

It is a cyclic number.

It is not a de Polignac number, because 1322642321 - 2¹⁰ = 1322641297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1322642323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50231 + ... + 71891.

It is an arithmetic number, because the mean of its divisors is an integer number (56407848).

Almost surely, 2^1322642321 is an apocalyptic number.

1322642321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1322642321 is a deficient number, since it is larger than the sum of its proper divisors (482408815).

1322642321 is a wasteful number, since it uses less digits than its factorization.

1322642321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21753.

The product of its digits is 3456, while the sum is 26.

The square root of 1322642321 is about 36368.1498154635. The cubic root of 1322642321 is about 1097.6927731145.

The spelling of 1322642321 in words is "one billion, three hundred twenty-two million, six hundred forty-two thousand, three hundred twenty-one".