212405543252 has 48 divisors (see below), whose sum is σ = 425532551808. Its totient is φ = 90876504960.

The previous prime is 212405543243. The next prime is 212405543279. The reversal of 212405543252 is 252345504212.

It is a happy number.

It is a super-2 number, since 2×212405543252² (a number of 23 digits) contains 22 as substring.

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, 60392198 + ... + 60395714.

It is an arithmetic number, because the mean of its divisors is an integer number (8865261496).

Almost surely, 2^212405543252 is an apocalyptic number.

It is an amenable number.

212405543252 is an abundant number, since it is smaller than the sum of its proper divisors (213127008556).

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

212405543252 is a wasteful number, since it uses less digits than its factorization.

212405543252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6576 (or 6574 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 35.

The spelling of 212405543252 in words is "two hundred twelve billion, four hundred five million, five hundred forty-three thousand, two hundred fifty-two".