221001021112112 has 40 divisors (see below), whose sum is σ = 428977384836000. Its totient is φ = 110297244556800.

The previous prime is 221001021112097. The next prime is 221001021112171. The reversal of 221001021112112 is 211211120100122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52725389 + ... + 56762387.

It is an arithmetic number, because the mean of its divisors is an integer number (10724434620900).

Almost surely, 2^{221001021112112} is an apocalyptic number.

It is an amenable number.

221001021112112 is a deficient number, since it is larger than the sum of its proper divisors (207976363723888).

221001021112112 is a wasteful number, since it uses less digits than its factorization.

221001021112112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4043301 (or 4043295 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 221001021112112 its reverse (211211120100122), we get a palindrome (432212141212234).

The spelling of 221001021112112 in words is "two hundred twenty-one trillion, one billion, twenty-one million, one hundred twelve thousand, one hundred twelve".