212230132544 has 84 divisors (see below), whose sum is σ = 444820336164. Its totient is φ = 100452261888.

The previous prime is 212230132537. The next prime is 212230132547. The reversal of 212230132544 is 445231032212.

It can be written as a sum of positive squares in 2 ways, for example, as 136539118144 + 75691014400 = 369512^2 + 275120^2 .

It is a super-4 number, since 4×212230132544⁴ (a number of 46 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212230132547) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39204782 + ... + 39210194.

Almost surely, 2^212230132544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212230132544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222410168082).

212230132544 is an abundant number, since it is smaller than the sum of its proper divisors (232590203620).

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

212230132544 is a wasteful number, since it uses less digits than its factorization.

212230132544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7160 (or 7131 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 212230132544 its reverse (445231032212), we get a palindrome (657461164756).

The spelling of 212230132544 in words is "two hundred twelve billion, two hundred thirty million, one hundred thirty-two thousand, five hundred forty-four".