221010220111 has 8 divisors (see below), whose sum is σ = 234032805360. Its totient is φ = 207990077568.

The previous prime is 221010220099. The next prime is 221010220121. The reversal of 221010220111 is 111022010122.

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 221010220111 - 2¹⁷ = 221010089039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221010220091 and 221010220100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221010220121) 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, 422736 + ... + 787861.

It is an arithmetic number, because the mean of its divisors is an integer number (29254100670).

Almost surely, 2^221010220111 is an apocalyptic number.

221010220111 is a deficient number, since it is larger than the sum of its proper divisors (13022585249).

221010220111 is a wasteful number, since it uses less digits than its factorization.

221010220111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221353.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221010220111 its reverse (111022010122), we get a palindrome (332032230233).

The spelling of 221010220111 in words is "two hundred twenty-one billion, ten million, two hundred twenty thousand, one hundred eleven".