21200002000212 has 48 divisors (see below), whose sum is σ = 56674319651712. Its totient is φ = 6042038323200.

The previous prime is 21200002000211. The next prime is 21200002000237. The reversal of 21200002000212 is 21200020000212.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21200002000211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 314655813 + ... + 314723180.

It is an arithmetic number, because the mean of its divisors is an integer number (1180714992744).

Almost surely, 2^{21200002000212} is an apocalyptic number.

It is an amenable number.

21200002000212 is an abundant number, since it is smaller than the sum of its proper divisors (35474317651500).

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

21200002000212 is a wasteful number, since it uses less digits than its factorization.

21200002000212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629379408 (or 629379406 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 21200002000212 its reverse (21200020000212), we get a palindrome (42400022000424).

The spelling of 21200002000212 in words is "twenty-one trillion, two hundred billion, two million, two hundred twelve", and thus it is an aban number.