221202210112111 has 16 divisors (see below), whose sum is σ = 229030140860640. Its totient is φ = 213387649413120.

The previous prime is 221202210112097. The next prime is 221202210112141. The reversal of 221202210112111 is 111211012202122.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 221202210112111 - 2³⁹ = 220652454298223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221202210112141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 701855515 + ... + 702170611.

It is an arithmetic number, because the mean of its divisors is an integer number (14314383803790).

Almost surely, 2^{221202210112111} is an apocalyptic number.

221202210112111 is a deficient number, since it is larger than the sum of its proper divisors (7827930748529).

221202210112111 is a wasteful number, since it uses less digits than its factorization.

221202210112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336234.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 221202210112111 its reverse (111211012202122), we get a palindrome (332413222314233).

The spelling of 221202210112111 in words is "two hundred twenty-one trillion, two hundred two billion, two hundred ten million, one hundred twelve thousand, one hundred eleven".