220123123211 has 8 divisors (see below), whose sum is σ = 220596566400. Its totient is φ = 219649984960.

The previous prime is 220123123193. The next prime is 220123123217. The reversal of 220123123211 is 112321321022.

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

It is a cyclic number.

It is not a de Polignac number, because 220123123211 - 2⁶ = 220123123147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220123123217) 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, 1399625 + ... + 1548933.

It is an arithmetic number, because the mean of its divisors is an integer number (27574570800).

Almost surely, 2^220123123211 is an apocalyptic number.

220123123211 is a deficient number, since it is larger than the sum of its proper divisors (473443189).

220123123211 is a wasteful number, since it uses less digits than its factorization.

220123123211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152469.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 220123123211 its reverse (112321321022), we get a palindrome (332444444233).

The spelling of 220123123211 in words is "two hundred twenty billion, one hundred twenty-three million, one hundred twenty-three thousand, two hundred eleven".