1322331021 has 16 divisors (see below), whose sum is σ = 2137101120. Its totient is φ = 801412560.

The previous prime is 1322331013. The next prime is 1322331037. The reversal of 1322331021 is 1201332231.

1322331021 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1322331021 - 2³ = 1322331013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1322330985 and 1322331003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1322331061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2225850 + ... + 2226443.

It is an arithmetic number, because the mean of its divisors is an integer number (133568820).

Almost surely, 2^1322331021 is an apocalyptic number.

1322331021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1322331021 is a deficient number, since it is larger than the sum of its proper divisors (814770099).

1322331021 is a wasteful number, since it uses less digits than its factorization.

1322331021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4452313 (or 4452307 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1322331021 is about 36363.8697198194. The cubic root of 1322331021 is about 1097.6066478970.

Adding to 1322331021 its reverse (1201332231), we get a palindrome (2523663252).

It can be divided in two parts, 13223 and 31021, that added together give a palindrome (44244).

The spelling of 1322331021 in words is "one billion, three hundred twenty-two million, three hundred thirty-one thousand, twenty-one".