220030211203123 has 4 divisors (see below), whose sum is σ = 221347757378160. Its totient is φ = 218712665028088.

The previous prime is 220030211203073. The next prime is 220030211203139. The reversal of 220030211203123 is 321302112030022.

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 220030211203123 - 2²⁵ = 220030177648691 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220030211203094 and 220030211203103.

It is not an unprimeable number, because it can be changed into a prime (220030211203163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 658773087268 + ... + 658773087601.

It is an arithmetic number, because the mean of its divisors is an integer number (55336939344540).

Almost surely, 2^{220030211203123} is an apocalyptic number.

220030211203123 is a deficient number, since it is larger than the sum of its proper divisors (1317546175037).

220030211203123 is a wasteful number, since it uses less digits than its factorization.

220030211203123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1317546175036.

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

Adding to 220030211203123 its reverse (321302112030022), we get a palindrome (541332323233145).

The spelling of 220030211203123 in words is "two hundred twenty trillion, thirty billion, two hundred eleven million, two hundred three thousand, one hundred twenty-three".