212243632210520 has 64 divisors (see below), whose sum is σ = 480054082753440. Its totient is φ = 84452651136000.

The previous prime is 212243632210499. The next prime is 212243632210537. The reversal of 212243632210520 is 25012236342212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1038611 + ... + 20629250.

Almost surely, 2^{212243632210520} is an apocalyptic number.

212243632210520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212243632210520 is an abundant number, since it is smaller than the sum of its proper divisors (267810450542920).

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

212243632210520 is a wasteful number, since it uses less digits than its factorization.

212243632210520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21669156 (or 21669152 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 35.

Adding to 212243632210520 its reverse (25012236342212), we get a palindrome (237255868552732).

The spelling of 212243632210520 in words is "two hundred twelve trillion, two hundred forty-three billion, six hundred thirty-two million, two hundred ten thousand, five hundred twenty".