20432311221332 has 12 divisors (see below), whose sum is σ = 36989528935380. Its totient is φ = 9863874382656.

The previous prime is 20432311221317. The next prime is 20432311221347. The reversal of 20432311221332 is 23312211323402.

It is an interprime number because it is at equal distance from previous prime (20432311221317) and next prime (20432311221347).

It can be written as a sum of positive squares in 2 ways, for example, as 6076441921936 + 14355869299396 = 2465044^2 + 3788914^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a junction number, because it is equal to n+sod(n) for n = 20432311221295 and 20432311221304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88070306873 + ... + 88070307104.

It is an arithmetic number, because the mean of its divisors is an integer number (3082460744615).

Almost surely, 2^{20432311221332} is an apocalyptic number.

It is an amenable number.

20432311221332 is a deficient number, since it is larger than the sum of its proper divisors (16557217714048).

20432311221332 is a wasteful number, since it uses less digits than its factorization.

20432311221332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176140614010 (or 176140614008 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 20432311221332 its reverse (23312211323402), we get a palindrome (43744522544734).

The spelling of 20432311221332 in words is "twenty trillion, four hundred thirty-two billion, three hundred eleven million, two hundred twenty-one thousand, three hundred thirty-two".