1322221340 has 24 divisors (see below), whose sum is σ = 3029089392. Its totient is φ = 480807680.

The previous prime is 1322221337. The next prime is 1322221379. The reversal of 1322221340 is 431222231.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3004829 + ... + 3005268.

It is an arithmetic number, because the mean of its divisors is an integer number (126212058).

Almost surely, 2^1322221340 is an apocalyptic number.

1322221340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1322221340 is an abundant number, since it is smaller than the sum of its proper divisors (1706868052).

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

1322221340 is a wasteful number, since it uses less digits than its factorization.

1322221340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6010117 (or 6010115 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1322221340 is about 36362.3615844736. The cubic root of 1322221340 is about 1097.5762999934.

Adding to 1322221340 its reverse (431222231), we get a palindrome (1753443571).

The spelling of 1322221340 in words is "one billion, three hundred twenty-two million, two hundred twenty-one thousand, three hundred forty".