221302312112 has 40 divisors (see below), whose sum is σ = 490820909856. Its totient is φ = 94690100736.

The previous prime is 221302312103. The next prime is 221302312169. The reversal of 221302312112 is 211213203122.

It is a super-2 number, since 2×221302312112² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1532123 + ... + 1670330.

Almost surely, 2^221302312112 is an apocalyptic number.

It is an amenable number.

221302312112 is an abundant number, since it is smaller than the sum of its proper divisors (269518597744).

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

221302312112 is a wasteful number, since it uses less digits than its factorization.

221302312112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3203085 (or 3203079 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 221302312112 its reverse (211213203122), we get a palindrome (432515515234).

The spelling of 221302312112 in words is "two hundred twenty-one billion, three hundred two million, three hundred twelve thousand, one hundred twelve".