221022001021111 has 8 divisors (see below), whose sum is σ = 221337051439680. Its totient is φ = 220706971849728.

The previous prime is 221022001021097. The next prime is 221022001021123. The reversal of 221022001021111 is 111120100220122.

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 221022001021111 - 2¹⁷ = 221022000890039 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 (221022001021141) 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 7 ways as a sum of consecutive naturals, for example, 15566295 + ... + 26160151.

It is an arithmetic number, because the mean of its divisors is an integer number (27667131429960).

Almost surely, 2^{221022001021111} is an apocalyptic number.

221022001021111 is a deficient number, since it is larger than the sum of its proper divisors (315050418569).

221022001021111 is a wasteful number, since it uses less digits than its factorization.

221022001021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10623593.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 221022001021111 its reverse (111120100220122), we get a palindrome (332142101241233).

The spelling of 221022001021111 in words is "two hundred twenty-one trillion, twenty-two billion, one million, twenty-one thousand, one hundred eleven".