213221131333122 has 16 divisors (see below), whose sum is σ = 465209741090592. Its totient is φ = 64612464040320.

The previous prime is 213221131333061. The next prime is 213221131333169. The reversal of 213221131333122 is 221333131122312.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 213221131333122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1615311600943 + ... + 1615311601074.

It is an arithmetic number, because the mean of its divisors is an integer number (29075608818162).

Almost surely, 2^{213221131333122} is an apocalyptic number.

213221131333122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

213221131333122 is an abundant number, since it is smaller than the sum of its proper divisors (251988609757470).

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

213221131333122 is a wasteful number, since it uses less digits than its factorization.

213221131333122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3230623202033.

The product of its digits is 7776, while the sum is 30.

Adding to 213221131333122 its reverse (221333131122312), we get a palindrome (434554262455434).

The spelling of 213221131333122 in words is "two hundred thirteen trillion, two hundred twenty-one billion, one hundred thirty-one million, three hundred thirty-three thousand, one hundred twenty-two".