212012021021200 has 60 divisors (see below), whose sum is σ = 509362475465088. Its totient is φ = 84804209872000.

The previous prime is 212012021021191. The next prime is 212012021021201. The reversal of 212012021021200 is 2120120210212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (212012021021201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57204525 + ... + 60797875.

Almost surely, 2^{212012021021200} is an apocalyptic number.

212012021021200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212012021021200 is an abundant number, since it is smaller than the sum of its proper divisors (297350454443888).

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

212012021021200 is a wasteful number, since it uses less digits than its factorization.

212012021021200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3740872 (or 3740861 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212012021021200 its reverse (2120120210212), we get a palindrome (214132141231412).

212012021021200 divided by its reverse (2120120210212) gives a square (100 = 10²).

The spelling of 212012021021200 in words is "two hundred twelve trillion, twelve billion, twenty-one million, twenty-one thousand, two hundred".