221120012112 has 40 divisors (see below), whose sum is σ = 604828270656. Its totient is φ = 69370983936.

The previous prime is 221120012101. The next prime is 221120012131. The reversal of 221120012112 is 211210021122.

It is a super-2 number, since 2×221120012112² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221120012091 and 221120012100.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 135489388 + ... + 135491019.

Almost surely, 2^221120012112 is an apocalyptic number.

It is an amenable number.

221120012112 is an abundant number, since it is smaller than the sum of its proper divisors (383708258544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221120012112 is a wasteful number, since it uses less digits than its factorization.

221120012112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270980435 (or 270980429 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 221120012112 its reverse (211210021122), we get a palindrome (432330033234).

The spelling of 221120012112 in words is "two hundred twenty-one billion, one hundred twenty million, twelve thousand, one hundred twelve".