20332231211321 has 4 divisors (see below), whose sum is σ = 20332246211700. Its totient is φ = 20332216210944.

The previous prime is 20332231211317. The next prime is 20332231211359. The reversal of 20332231211321 is 12311213223302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17432921325625 + 2899309885696 = 4175275^2 + 1702736^2 .

It is a cyclic number.

It is not a de Polignac number, because 20332231211321 - 2² = 20332231211317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20332231211371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5239976 + ... + 8253593.

It is an arithmetic number, because the mean of its divisors is an integer number (5083061552925).

Almost surely, 2^{20332231211321} is an apocalyptic number.

It is an amenable number.

20332231211321 is a deficient number, since it is larger than the sum of its proper divisors (15000379).

20332231211321 is a wasteful number, since it uses less digits than its factorization.

20332231211321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15000378.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 20332231211321 its reverse (12311213223302), we get a palindrome (32643444434623).

The spelling of 20332231211321 in words is "twenty trillion, three hundred thirty-two billion, two hundred thirty-one million, two hundred eleven thousand, three hundred twenty-one".