212021021220200 has 48 divisors (see below), whose sum is σ = 492966198000780. Its totient is φ = 84805428072960.

The previous prime is 212021021220187. The next prime is 212021021220301. The reversal of 212021021220200 is 2022120120212.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 56165821516996 + 155855199703204 = 7494386^2 + 12484198^2 .

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, 12917957 + ... + 24308756.

Almost surely, 2^{212021021220200} is an apocalyptic number.

212021021220200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212021021220200 is an abundant number, since it is smaller than the sum of its proper divisors (280945176780580).

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

212021021220200 is a wasteful number, since it uses less digits than its factorization.

212021021220200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37255206 (or 37255197 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 212021021220200 its reverse (2022120120212), we get a palindrome (214043141340412).

The spelling of 212021021220200 in words is "two hundred twelve trillion, twenty-one billion, twenty-one million, two hundred twenty thousand, two hundred".