221211201211122 has 32 divisors (see below), whose sum is σ = 445421449800000. Its totient is φ = 73237607846208.

The previous prime is 221211201211109. The next prime is 221211201211159. The reversal of 221211201211122 is 221112102112122.

It is an unprimeable number.

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, 45432997 + ... + 50065752.

It is an arithmetic number, because the mean of its divisors is an integer number (13919420306250).

Almost surely, 2^{221211201211122} is an apocalyptic number.

221211201211122 is an abundant number, since it is smaller than the sum of its proper divisors (224210248588878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221211201211122 is a wasteful number, since it uses less digits than its factorization.

221211201211122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95501370.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 221211201211122 its reverse (221112102112122), we get a palindrome (442323303323244).

The spelling of 221211201211122 in words is "two hundred twenty-one trillion, two hundred eleven billion, two hundred one million, two hundred eleven thousand, one hundred twenty-two".