1322240021 has 8 divisors (see below), whose sum is σ = 1341810624. Its totient is φ = 1302708960.

The previous prime is 1322240009. The next prime is 1322240033. The reversal of 1322240021 is 1200422231.

It is an interprime number because it is at equal distance from previous prime (1322240009) and next prime (1322240033).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1322240021 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 (1322240041) 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, 61226 + ... + 79956.

It is an arithmetic number, because the mean of its divisors is an integer number (167726328).

Almost surely, 2^1322240021 is an apocalyptic number.

It is an amenable number.

1322240021 is a deficient number, since it is larger than the sum of its proper divisors (19570603).

1322240021 is an equidigital number, since it uses as much as digits as its factorization.

1322240021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19771.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1322240021 is about 36362.6184563213. The cubic root of 1322240021 is about 1097.5814690034.

Adding to 1322240021 its reverse (1200422231), we get a palindrome (2522662252).

The spelling of 1322240021 in words is "one billion, three hundred twenty-two million, two hundred forty thousand, twenty-one".