213211443111420 has 96 divisors (see below), whose sum is σ = 665083971155520. Its totient is φ = 50673064458240.

The previous prime is 213211443111409. The next prime is 213211443111421. The reversal of 213211443111420 is 24111344112312.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213211443111421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4712874001 + ... + 4712919240.

It is an arithmetic number, because the mean of its divisors is an integer number (6927958032870).

Almost surely, 2^{213211443111420} is an apocalyptic number.

213211443111420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213211443111420 is an abundant number, since it is smaller than the sum of its proper divisors (451872528044100).

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

213211443111420 is a wasteful number, since it uses less digits than its factorization.

213211443111420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9425793295 (or 9425793293 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

Adding to 213211443111420 its reverse (24111344112312), we get a palindrome (237322787223732).

The spelling of 213211443111420 in words is "two hundred thirteen trillion, two hundred eleven billion, four hundred forty-three million, one hundred eleven thousand, four hundred twenty".