221100120122 has 16 divisors (see below), whose sum is σ = 379904142912. Its totient is φ = 94538352960.

The previous prime is 221100120097. The next prime is 221100120149. The reversal of 221100120122 is 221021001122.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 221100120097 and 221100120106.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18230504 + ... + 18242627.

It is an arithmetic number, because the mean of its divisors is an integer number (23744008932).

Almost surely, 2^221100120122 is an apocalyptic number.

221100120122 is a deficient number, since it is larger than the sum of its proper divisors (158804022790).

221100120122 is a wasteful number, since it uses less digits than its factorization.

221100120122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36473573.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 221100120122 its reverse (221021001122), we get a palindrome (442121121244).

The spelling of 221100120122 in words is "two hundred twenty-one billion, one hundred million, one hundred twenty thousand, one hundred twenty-two".