21201200120010 has 64 divisors (see below), whose sum is σ = 51003231120000. Its totient is φ = 5640289228032.

The previous prime is 21201200119997. The next prime is 21201200120017. The reversal of 21201200120010 is 1002100210212.

It is not an unprimeable number, because it can be changed into a prime (21201200120017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41497432 + ... + 42005228.

It is an arithmetic number, because the mean of its divisors is an integer number (796925486250).

Almost surely, 2^{21201200120010} is an apocalyptic number.

21201200120010 is an abundant number, since it is smaller than the sum of its proper divisors (29802030999990).

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

21201200120010 is a wasteful number, since it uses less digits than its factorization.

21201200120010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511095.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21201200120010 its reverse (1002100210212), we get a palindrome (22203300330222).

The spelling of 21201200120010 in words is "twenty-one trillion, two hundred one billion, two hundred million, one hundred twenty thousand, ten".