221111101120210 has 32 divisors (see below), whose sum is σ = 455173215022080. Its totient is φ = 75756838264512.

The previous prime is 221111101120199. The next prime is 221111101120211. The reversal of 221111101120210 is 12021101111122.

It is not an unprimeable number, because it can be changed into a prime (221111101120211) 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 15 ways as a sum of consecutive naturals, for example, 1097442709 + ... + 1097644168.

It is an arithmetic number, because the mean of its divisors is an integer number (14224162969440).

Almost surely, 2^{221111101120210} is an apocalyptic number.

221111101120210 is an abundant number, since it is smaller than the sum of its proper divisors (234062113901870).

221111101120210 is a wasteful number, since it uses less digits than its factorization.

221111101120210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2195088330.

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

Adding to 221111101120210 its reverse (12021101111122), we get a palindrome (233132202231332).

The spelling of 221111101120210 in words is "two hundred twenty-one trillion, one hundred eleven billion, one hundred one million, one hundred twenty thousand, two hundred ten".