1322331231220 has 24 divisors (see below), whose sum is σ = 2776917636864. Its totient is φ = 528928292256.

The previous prime is 1322331231217. The next prime is 1322331231259. The reversal of 1322331231220 is 221321332231.

It is a super-2 number, since 2×1322331231220² (a number of 25 digits) contains 22 as substring.

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, 4034757 + ... + 4350163.

It is an arithmetic number, because the mean of its divisors is an integer number (115704901536).

Almost surely, 2^{1322331231220} is an apocalyptic number.

1322331231220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1322331231220 is an abundant number, since it is smaller than the sum of its proper divisors (1454586405644).

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

1322331231220 is a wasteful number, since it uses less digits than its factorization.

1322331231220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525039 (or 525037 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 1322331231220 its reverse (221321332231), we get a palindrome (1543652563451).

It can be divided in two parts, 1322331 and 231220, that added together give a palindrome (1553551).

The spelling of 1322331231220 in words is "one trillion, three hundred twenty-two billion, three hundred thirty-one million, two hundred thirty-one thousand, two hundred twenty".