210001213121300 has 144 divisors (see below), whose sum is σ = 458599163400000. Its totient is φ = 83468686202880.

The previous prime is 210001213121237. The next prime is 210001213121327. The reversal of 210001213121300 is 3121312100012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14286761351 + ... + 14286776049.

It is an arithmetic number, because the mean of its divisors is an integer number (3184716412500).

Almost surely, 2^{210001213121300} is an apocalyptic number.

210001213121300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210001213121300 is an abundant number, since it is smaller than the sum of its proper divisors (248597950278700).

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

210001213121300 is a wasteful number, since it uses less digits than its factorization.

210001213121300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16458 (or 16451 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 210001213121300 its reverse (3121312100012), we get a palindrome (213122525221312).

The spelling of 210001213121300 in words is "two hundred ten trillion, one billion, two hundred thirteen million, one hundred twenty-one thousand, three hundred".