212130132520 has 96 divisors (see below), whose sum is σ = 499984358400. Its totient is φ = 80847947136.

The previous prime is 212130132503. The next prime is 212130132541. The reversal of 212130132520 is 25231031212.

It is a junction number, because it is equal to n+sod(n) for n = 212130132491 and 212130132500.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73680441 + ... + 73683319.

It is an arithmetic number, because the mean of its divisors is an integer number (5208170400).

Almost surely, 2^212130132520 is an apocalyptic number.

212130132520 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 212130132520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249992179200).

212130132520 is an abundant number, since it is smaller than the sum of its proper divisors (287854225880).

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

212130132520 is a wasteful number, since it uses less digits than its factorization.

212130132520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3479 (or 3192 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 212130132520 its reverse (25231031212), we get a palindrome (237361163732).

The spelling of 212130132520 in words is "two hundred twelve billion, one hundred thirty million, one hundred thirty-two thousand, five hundred twenty".