213140021020 has 24 divisors (see below), whose sum is σ = 448066728144. Its totient is φ = 85165973376.

The previous prime is 213140020999. The next prime is 213140021027. The reversal of 213140021020 is 20120041312.

213140021020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 213140020985 and 213140021003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213140021027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5607777 + ... + 5645656.

It is an arithmetic number, because the mean of its divisors is an integer number (18669447006).

Almost surely, 2^213140021020 is an apocalyptic number.

213140021020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213140021020 is an abundant number, since it is smaller than the sum of its proper divisors (234926707124).

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

213140021020 is a wasteful number, since it uses less digits than its factorization.

213140021020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11254389 (or 11254387 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 213140021020 its reverse (20120041312), we get a palindrome (233260062332).

The spelling of 213140021020 in words is "two hundred thirteen billion, one hundred forty million, twenty-one thousand, twenty".