221110110122 has 24 divisors (see below), whose sum is σ = 386002148868. Its totient is φ = 94592558720.

The previous prime is 221110110121. The next prime is 221110110131. The reversal of 221110110122 is 221011011122.

It can be written as a sum of positive squares in 2 ways, for example, as 211021715641 + 10088394481 = 459371^2 + 100441^2 .

It is a super-3 number, since 3×221110110122³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221110110097 and 221110110106.

It is not an unprimeable number, because it can be changed into a prime (221110110121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26868773 + ... + 26877000.

Almost surely, 2^221110110122 is an apocalyptic number.

221110110122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221110110122 is a deficient number, since it is larger than the sum of its proper divisors (164892038746).

221110110122 is a wasteful number, since it uses less digits than its factorization.

221110110122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53745814 (or 53745803 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 221110110122 its reverse (221011011122), we get a palindrome (442121121244).

The spelling of 221110110122 in words is "two hundred twenty-one billion, one hundred ten million, one hundred ten thousand, one hundred twenty-two".