221122112201111 has 8 divisors (see below), whose sum is σ = 246356550537984. Its totient is φ = 196743078553720.

The previous prime is 221122112201077. The next prime is 221122112201119. The reversal of 221122112201111 is 111102211221122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221122112201111 - 2¹⁸ = 221122111938967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221122112201119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213851171825 + ... + 213851172858.

It is an arithmetic number, because the mean of its divisors is an integer number (30794568817248).

Almost surely, 2^{221122112201111} is an apocalyptic number.

221122112201111 is a deficient number, since it is larger than the sum of its proper divisors (25234438336873).

221122112201111 is a wasteful number, since it uses less digits than its factorization.

221122112201111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427702344741.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 221122112201111 its reverse (111102211221122), we get a palindrome (332224323422233).

The spelling of 221122112201111 in words is "two hundred twenty-one trillion, one hundred twenty-two billion, one hundred twelve million, two hundred one thousand, one hundred eleven".