221201220120112 has 20 divisors (see below), whose sum is σ = 428577762778776. Its totient is φ = 110600507144960.

The previous prime is 221201220120107. The next prime is 221201220120143. The reversal of 221201220120112 is 211021022102122.

It is a self number, because there is not a number n which added to its sum of digits gives 221201220120112.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13096728 + ... + 24777544.

Almost surely, 2^{221201220120112} is an apocalyptic number.

It is an amenable number.

221201220120112 is a deficient number, since it is larger than the sum of its proper divisors (207376542658664).

221201220120112 is a wasteful number, since it uses less digits than its factorization.

221201220120112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12864396 (or 12864390 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221201220120112 its reverse (211021022102122), we get a palindrome (432222242222234).

The spelling of 221201220120112 in words is "two hundred twenty-one trillion, two hundred one billion, two hundred twenty million, one hundred twenty thousand, one hundred twelve".