221120222211111 has 8 divisors (see below), whose sum is σ = 304993409946480. Its totient is φ = 142330257974912.

The previous prime is 221120222211061. The next prime is 221120222211127. The reversal of 221120222211111 is 111112222021122.

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 221120222211111 - 2¹⁷ = 221120222080039 is a prime.

It is a super-2 number, since 2×221120222211111² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221120222211181) 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, 1270805874690 + ... + 1270805874863.

It is an arithmetic number, because the mean of its divisors is an integer number (38124176243310).

Almost surely, 2^{221120222211111} is an apocalyptic number.

221120222211111 is a deficient number, since it is larger than the sum of its proper divisors (83873187735369).

221120222211111 is a wasteful number, since it uses less digits than its factorization.

221120222211111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2541611749585.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 221120222211111 its reverse (111112222021122), we get a palindrome (332232444232233).

The spelling of 221120222211111 in words is "two hundred twenty-one trillion, one hundred twenty billion, two hundred twenty-two million, two hundred eleven thousand, one hundred eleven".