220321321123 has 4 divisors (see below), whose sum is σ = 220354714800. Its totient is φ = 220287927448.

The previous prime is 220321321091. The next prime is 220321321139. The reversal of 220321321123 is 321123123022.

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

It is a cyclic number.

It is not a de Polignac number, because 220321321123 - 2⁵ = 220321321091 is a prime.

It is a super-2 number, since 2×220321321123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220321321094 and 220321321103.

It is not an unprimeable number, because it can be changed into a prime (220321321163) 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, 16686940 + ... + 16700137.

It is an arithmetic number, because the mean of its divisors is an integer number (55088678700).

Almost surely, 2^220321321123 is an apocalyptic number.

220321321123 is a deficient number, since it is larger than the sum of its proper divisors (33393677).

220321321123 is an equidigital number, since it uses as much as digits as its factorization.

220321321123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33393676.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 220321321123 its reverse (321123123022), we get a palindrome (541444444145).

The spelling of 220321321123 in words is "two hundred twenty billion, three hundred twenty-one million, three hundred twenty-one thousand, one hundred twenty-three".