221001110012 has 12 divisors (see below), whose sum is σ = 386812163640. Its totient is φ = 110483348976.

The previous prime is 221001110009. The next prime is 221001110039. The reversal of 221001110012 is 210011100122.

It is a super-2 number, since 2×221001110012² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221001109975 and 221001110002.

It is a congruent number.

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, 4272587 + ... + 4324002.

It is an arithmetic number, because the mean of its divisors is an integer number (32234346970).

Almost surely, 2^221001110012 is an apocalyptic number.

It is an amenable number.

221001110012 is a deficient number, since it is larger than the sum of its proper divisors (165811053628).

221001110012 is a wasteful number, since it uses less digits than its factorization.

221001110012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8603020 (or 8603018 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 221001110012 its reverse (210011100122), we get a palindrome (431012210134).

It can be divided in two parts, 2 and 21001110012, that multiplied together give a palindrome (42002220024).

The spelling of 221001110012 in words is "two hundred twenty-one billion, one million, one hundred ten thousand, twelve".