212216705600 has 84 divisors (see below), whose sum is σ = 522277695600. Its totient is φ = 84871733760.

The previous prime is 212216705573. The next prime is 212216705621. The reversal of 212216705600 is 6507612212.

It is a super-3 number, since 3×212216705600³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15575591 + ... + 15589209.

Almost surely, 2^212216705600 is an apocalyptic number.

212216705600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212216705600 is an abundant number, since it is smaller than the sum of its proper divisors (310060990000).

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

212216705600 is a wasteful number, since it uses less digits than its factorization.

212216705600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23380 (or 23365 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The spelling of 212216705600 in words is "two hundred twelve billion, two hundred sixteen million, seven hundred five thousand, six hundred".