221210010112111 has 16 divisors (see below), whose sum is σ = 225230745726720. Its totient is φ = 217215186027840.

The previous prime is 221210010112027. The next prime is 221210010112139. The reversal of 221210010112111 is 111211010012122.

It is a cyclic number.

It is not a de Polignac number, because 221210010112111 - 2¹³ = 221210010103919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221210010112711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37498075 + ... + 42994483.

It is an arithmetic number, because the mean of its divisors is an integer number (14076921607920).

Almost surely, 2^{221210010112111} is an apocalyptic number.

221210010112111 is a deficient number, since it is larger than the sum of its proper divisors (4020735614609).

221210010112111 is a wasteful number, since it uses less digits than its factorization.

221210010112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5498766.

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

Adding to 221210010112111 its reverse (111211010012122), we get a palindrome (332421020124233).

The spelling of 221210010112111 in words is "two hundred twenty-one trillion, two hundred ten billion, ten million, one hundred twelve thousand, one hundred eleven".