22132031321 has 4 divisors (see below), whose sum is σ = 22443750144. Its totient is φ = 21820312500.

The previous prime is 22132031309. The next prime is 22132031351. The reversal of 22132031321 is 12313023122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12313023122 = 2 ⋅6156511561.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22132031321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22132031293 and 22132031302.

It is not an unprimeable number, because it can be changed into a prime (22132031351) 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, 155859305 + ... + 155859446.

It is an arithmetic number, because the mean of its divisors is an integer number (5610937536).

Almost surely, 2^22132031321 is an apocalyptic number.

It is an amenable number.

22132031321 is a deficient number, since it is larger than the sum of its proper divisors (311718823).

22132031321 is an equidigital number, since it uses as much as digits as its factorization.

22132031321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311718822.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 22132031321 its reverse (12313023122), we get a palindrome (34445054443).

The spelling of 22132031321 in words is "twenty-two billion, one hundred thirty-two million, thirty-one thousand, three hundred twenty-one".