213213230020020 has 192 divisors, whose sum is σ = 637765783716096. Its totient is φ = 53034011197440.

The previous prime is 213213230019997. The next prime is 213213230020081. The reversal of 213213230020020 is 20020032312312.

It is a happy number.

213213230020020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1381544460 + ... + 1381698780.

It is an arithmetic number, because the mean of its divisors is an integer number (3321696790188).

Almost surely, 2^{213213230020020} is an apocalyptic number.

213213230020020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213213230020020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (318882891858048).

213213230020020 is an abundant number, since it is smaller than the sum of its proper divisors (424552553696076).

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

213213230020020 is a wasteful number, since it uses less digits than its factorization.

213213230020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166450 (or 166448 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 213213230020020 its reverse (20020032312312), we get a palindrome (233233262332332).

The spelling of 213213230020020 in words is "two hundred thirteen trillion, two hundred thirteen billion, two hundred thirty million, twenty thousand, twenty".