2121213241300 has 36 divisors (see below), whose sum is σ = 4648607337276. Its totient is φ = 840084448000.

The previous prime is 2121213241291. The next prime is 2121213241369. The reversal of 2121213241300 is 31423121212.

It can be written as a sum of positive squares in 6 ways, for example, as 420583378576 + 1700629862724 = 648524^2 + 1304082^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105000457 + ... + 105020656.

It is an arithmetic number, because the mean of its divisors is an integer number (129127981591).

Almost surely, 2^{2121213241300} is an apocalyptic number.

2121213241300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121213241300 is an abundant number, since it is smaller than the sum of its proper divisors (2527394095976).

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

2121213241300 is a wasteful number, since it uses less digits than its factorization.

2121213241300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210021228 (or 210021221 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 2121213241300 its reverse (31423121212), we get a palindrome (2152636362512).

The spelling of 2121213241300 in words is "two trillion, one hundred twenty-one billion, two hundred thirteen million, two hundred forty-one thousand, three hundred".