221110121210012 has 48 divisors (see below), whose sum is σ = 415828937694240. Its totient is φ = 102496368218112.

The previous prime is 221110121209921. The next prime is 221110121210023. The reversal of 221110121210012 is 210012121011122.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198235814 + ... + 199348082.

It is an arithmetic number, because the mean of its divisors is an integer number (8663102868630).

Almost surely, 2^{221110121210012} is an apocalyptic number.

It is an amenable number.

221110121210012 is a deficient number, since it is larger than the sum of its proper divisors (194718816484228).

221110121210012 is a wasteful number, since it uses less digits than its factorization.

221110121210012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155990 (or 1155988 counting only the distinct ones).

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

Adding to 221110121210012 its reverse (210012121011122), we get a palindrome (431122242221134).

The spelling of 221110121210012 in words is "two hundred twenty-one trillion, one hundred ten billion, one hundred twenty-one million, two hundred ten thousand, twelve".