220001122123 has 4 divisors (see below), whose sum is σ = 221106655600. Its totient is φ = 218895588648.

The previous prime is 220001122087. The next prime is 220001122141. The reversal of 220001122123 is 321221100022.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220001122123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220001122097 and 220001122106.

It is not an unprimeable number, because it can be changed into a prime (220001122223) 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, 552766440 + ... + 552766837.

It is an arithmetic number, because the mean of its divisors is an integer number (55276663900).

Almost surely, 2^220001122123 is an apocalyptic number.

220001122123 is a deficient number, since it is larger than the sum of its proper divisors (1105533477).

220001122123 is a wasteful number, since it uses less digits than its factorization.

220001122123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105533476.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 220001122123 its reverse (321221100022), we get a palindrome (541222222145).

The spelling of 220001122123 in words is "two hundred twenty billion, one million, one hundred twenty-two thousand, one hundred twenty-three".