213230020212 has 144 divisors (see below), whose sum is σ = 634063731840. Its totient is φ = 61805715840.

The previous prime is 213230020139. The next prime is 213230020229. The reversal of 213230020212 is 212020032312.

213230020212 is a `hidden beast` number, since 2 + 132 + 300 + 20 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 54153 + ... + 655280.

It is an arithmetic number, because the mean of its divisors is an integer number (4403220360).

Almost surely, 2^213230020212 is an apocalyptic number.

213230020212 is a gapful number since it is divisible by the number (22) 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 213230020212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317031865920).

213230020212 is an abundant number, since it is smaller than the sum of its proper divisors (420833711628).

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

213230020212 is a wasteful number, since it uses less digits than its factorization.

213230020212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709491 (or 709472 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 213230020212 its reverse (212020032312), we get a palindrome (425250052524).

It can be divided in two parts, 2132300 and 20212, that added together give a palindrome (2152512).

The spelling of 213230020212 in words is "two hundred thirteen billion, two hundred thirty million, twenty thousand, two hundred twelve".