221010020212111 has 8 divisors (see below), whose sum is σ = 239587021403744. Its totient is φ = 202658194792800.

The previous prime is 221010020212099. The next prime is 221010020212147. The reversal of 221010020212111 is 111212020010122.

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 221010020212111 - 2¹⁵ = 221010020179343 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 (221010020213111) 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, 56293941036 + ... + 56293944961.

It is an arithmetic number, because the mean of its divisors is an integer number (29948377675468).

Almost surely, 2^{221010020212111} is an apocalyptic number.

221010020212111 is a deficient number, since it is larger than the sum of its proper divisors (18577001191633).

221010020212111 is a wasteful number, since it uses less digits than its factorization.

221010020212111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112587886161.

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

Adding to 221010020212111 its reverse (111212020010122), we get a palindrome (332222040222233).

The spelling of 221010020212111 in words is "two hundred twenty-one trillion, ten billion, twenty million, two hundred twelve thousand, one hundred eleven".