213432111220 has 96 divisors (see below), whose sum is σ = 456525248256. Its totient is φ = 83806464000.

The previous prime is 213432111199. The next prime is 213432111227. The reversal of 213432111220 is 22111234312.

It is a junction number, because it is equal to n+sod(n) for n = 213432111191 and 213432111200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213432111227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128032827 + ... + 128034493.

It is an arithmetic number, because the mean of its divisors is an integer number (4755471336).

Almost surely, 2^213432111220 is an apocalyptic number.

213432111220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213432111220 is an abundant number, since it is smaller than the sum of its proper divisors (243093137036).

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

213432111220 is a wasteful number, since it uses less digits than its factorization.

213432111220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2281 (or 2279 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 213432111220 its reverse (22111234312), we get a palindrome (235543345532).

The spelling of 213432111220 in words is "two hundred thirteen billion, four hundred thirty-two million, one hundred eleven thousand, two hundred twenty".