221110210031123 has 16 divisors (see below), whose sum is σ = 252910986552000. Its totient is φ = 189362897805312.

The previous prime is 221110210031107. The next prime is 221110210031149. The reversal of 221110210031123 is 321130012011122.

It is not a de Polignac number, because 221110210031123 - 2⁴ = 221110210031107 is a prime.

It is a super-2 number, since 2×221110210031123² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221110210031095 and 221110210031104.

It is not an unprimeable number, because it can be changed into a prime (221110210061123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39265373 + ... + 44542001.

It is an arithmetic number, because the mean of its divisors is an integer number (15806936659500).

Almost surely, 2^{221110210031123} is an apocalyptic number.

221110210031123 is a deficient number, since it is larger than the sum of its proper divisors (31800776520877).

221110210031123 is a wasteful number, since it uses less digits than its factorization.

221110210031123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5281694.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 221110210031123 its reverse (321130012011122), we get a palindrome (542240222042245).

The spelling of 221110210031123 in words is "two hundred twenty-one trillion, one hundred ten billion, two hundred ten million, thirty-one thousand, one hundred twenty-three".