221111102101211 has 16 divisors (see below), whose sum is σ = 254054905847808. Its totient is φ = 188506685743200.

The previous prime is 221111102101187. The next prime is 221111102101229. The reversal of 221111102101211 is 112101201111122.

221111102101211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 221111102101211 - 2¹⁴ = 221111102084827 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221111102101211.

It is not an unprimeable number, because it can be changed into a prime (221111102101261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 743900 + ... + 21042233.

It is an arithmetic number, because the mean of its divisors is an integer number (15878431615488).

Almost surely, 2^{221111102101211} is an apocalyptic number.

221111102101211 is a deficient number, since it is larger than the sum of its proper divisors (32943803746597).

221111102101211 is a wasteful number, since it uses less digits than its factorization.

221111102101211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21793922.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 221111102101211 its reverse (112101201111122), we get a palindrome (333212303212333).

The spelling of 221111102101211 in words is "two hundred twenty-one trillion, one hundred eleven billion, one hundred two million, one hundred one thousand, two hundred eleven".