123221320311 has 8 divisors (see below), whose sum is σ = 164309467264. Its totient is φ = 82140360120.

The previous prime is 123221320297. The next prime is 123221320319. The reversal of 123221320311 is 113023122321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 123221320311 - 2¹⁴ = 123221303927 is a prime.

It is a super-2 number, since 2×123221320311² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123221320319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1756555 + ... + 1825356.

It is an arithmetic number, because the mean of its divisors is an integer number (20538683408).

Almost surely, 2^123221320311 is an apocalyptic number.

123221320311 is a deficient number, since it is larger than the sum of its proper divisors (41088146953).

123221320311 is a wasteful number, since it uses less digits than its factorization.

123221320311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3593381.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 123221320311 its reverse (113023122321), we get a palindrome (236244442632).

The spelling of 123221320311 in words is "one hundred twenty-three billion, two hundred twenty-one million, three hundred twenty thousand, three hundred eleven".