212221320200 has 48 divisors (see below), whose sum is σ = 493445562180. Its totient is φ = 84883196160.

The previous prime is 212221320149. The next prime is 212221320251. The reversal of 212221320200 is 2023122212.

It is an interprime number because it is at equal distance from previous prime (212221320149) and next prime (212221320251).

It can be written as a sum of positive squares in 6 ways, for example, as 85660411684 + 126560908516 = 292678^2 + 355754^2 .

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, 5238422 + ... + 5278778.

Almost surely, 2^212221320200 is an apocalyptic number.

212221320200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212221320200 is an abundant number, since it is smaller than the sum of its proper divisors (281224241980).

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

212221320200 is a wasteful number, since it uses less digits than its factorization.

212221320200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66666 (or 66657 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 212221320200 its reverse (2023122212), we get a palindrome (214244442412).

The spelling of 212221320200 in words is "two hundred twelve billion, two hundred twenty-one million, three hundred twenty thousand, two hundred".