20121021200210 has 64 divisors (see below), whose sum is σ = 41863605788160. Its totient is φ = 6820028920320.

The previous prime is 20121021200207. The next prime is 20121021200227. The reversal of 20121021200210 is 1200212012102.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39061652 + ... + 39573408.

It is an arithmetic number, because the mean of its divisors is an integer number (654118840440).

Almost surely, 2^{20121021200210} is an apocalyptic number.

20121021200210 is an abundant number, since it is smaller than the sum of its proper divisors (21742584587950).

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

20121021200210 is a wasteful number, since it uses less digits than its factorization.

20121021200210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518171.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20121021200210 its reverse (1200212012102), we get a palindrome (21321233212312).

The spelling of 20121021200210 in words is "twenty trillion, one hundred twenty-one billion, twenty-one million, two hundred thousand, two hundred ten".