212521345350 has 48 divisors (see below), whose sum is σ = 529258268160. Its totient is φ = 56435226400.

The previous prime is 212521345349. The next prime is 212521345369. The reversal of 212521345350 is 53543125212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2928186 + ... + 2999885.

It is an arithmetic number, because the mean of its divisors is an integer number (11026213920).

Almost surely, 2^212521345350 is an apocalyptic number.

212521345350 is an abundant number, since it is smaller than the sum of its proper divisors (316736922810).

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

212521345350 is a wasteful number, since it uses less digits than its factorization.

212521345350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5928325 (or 5928320 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 33.

The spelling of 212521345350 in words is "two hundred twelve billion, five hundred twenty-one million, three hundred forty-five thousand, three hundred fifty".