220211204123 has 4 divisors (see below), whose sum is σ = 220212217368. Its totient is φ = 220210190880.

The previous prime is 220211204119. The next prime is 220211204137. The reversal of 220211204123 is 321402112022.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 321402112022 = 2 ⋅160701056011.

It is a cyclic number.

It is not a de Polignac number, because 220211204123 - 2² = 220211204119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220211204095 and 220211204104.

It is not an unprimeable number, because it can be changed into a prime (220211204023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33086 + ... + 664467.

It is an arithmetic number, because the mean of its divisors is an integer number (55053054342).

Almost surely, 2^220211204123 is an apocalyptic number.

220211204123 is a deficient number, since it is larger than the sum of its proper divisors (1013245).

220211204123 is an equidigital number, since it uses as much as digits as its factorization.

220211204123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1013244.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 220211204123 its reverse (321402112022), we get a palindrome (541613316145).

The spelling of 220211204123 in words is "two hundred twenty billion, two hundred eleven million, two hundred four thousand, one hundred twenty-three".