320111021132221 has 4 divisors (see below), whose sum is σ = 349212023053344. Its totient is φ = 291010019211100.

The previous prime is 320111021132171. The next prime is 320111021132269. The reversal of 320111021132221 is 122231120111023.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 320111021132221 - 2¹⁹ = 320111020607933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320111021132192 and 320111021132201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320111021132321) 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, 14550500960545 + ... + 14550500960566.

It is an arithmetic number, because the mean of its divisors is an integer number (87303005763336).

Almost surely, 2^{320111021132221} is an apocalyptic number.

It is an amenable number.

320111021132221 is a deficient number, since it is larger than the sum of its proper divisors (29101001921123).

320111021132221 is a wasteful number, since it uses less digits than its factorization.

320111021132221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29101001921122.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 320111021132221 its reverse (122231120111023), we get a palindrome (442342141243244).

The spelling of 320111021132221 in words is "three hundred twenty trillion, one hundred eleven billion, twenty-one million, one hundred thirty-two thousand, two hundred twenty-one".