221101121112 has 32 divisors (see below), whose sum is σ = 567692070000. Its totient is φ = 71708471424.

The previous prime is 221101121089. The next prime is 221101121179. The reversal of 221101121112 is 211121101122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 221101121091 and 221101121100.

It is a congruent number.

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, 124492987 + ... + 124494762.

Almost surely, 2^221101121112 is an apocalyptic number.

It is an amenable number.

221101121112 is an abundant number, since it is smaller than the sum of its proper divisors (346590948888).

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

221101121112 is a wasteful number, since it uses less digits than its factorization.

221101121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248987795 (or 248987791 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 221101121112 its reverse (211121101122), we get a palindrome (432222222234).

The spelling of 221101121112 in words is "two hundred twenty-one billion, one hundred one million, one hundred twenty-one thousand, one hundred twelve".