1322916221 has 8 divisors (see below), whose sum is σ = 1456670304. Its totient is φ = 1191410320.

The previous prime is 1322916193. The next prime is 1322916223. The reversal of 1322916221 is 1226192231.

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 1322916221 - 2⁶ = 1322916157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1322916223) 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, 560810 + ... + 563163.

It is an arithmetic number, because the mean of its divisors is an integer number (182083788).

Almost surely, 2^1322916221 is an apocalyptic number.

1322916221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1322916221 is a deficient number, since it is larger than the sum of its proper divisors (133754083).

1322916221 is a wasteful number, since it uses less digits than its factorization.

1322916221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124091.

The product of its digits is 2592, while the sum is 29.

The square root of 1322916221 is about 36371.9152781373. The cubic root of 1322916221 is about 1097.7685399574.

The spelling of 1322916221 in words is "one billion, three hundred twenty-two million, nine hundred sixteen thousand, two hundred twenty-one".