2121020003212 has 192 divisors, whose sum is σ = 4376437309440. Its totient is φ = 889293081600.

The previous prime is 2121020003153. The next prime is 2121020003227. The reversal of 2121020003212 is 2123000201212.

It is a happy 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 63 ways as a sum of consecutive naturals, for example, 3105446223 + ... + 3105446905.

It is an arithmetic number, because the mean of its divisors is an integer number (22793944320).

Almost surely, 2^{2121020003212} is an apocalyptic number.

2121020003212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2121020003212 is an abundant number, since it is smaller than the sum of its proper divisors (2255417306228).

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

2121020003212 is a wasteful number, since it uses less digits than its factorization.

2121020003212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364 (or 1362 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 2121020003212 its reverse (2123000201212), we get a palindrome (4244020204424).

The spelling of 2121020003212 in words is "two trillion, one hundred twenty-one billion, twenty million, three thousand, two hundred twelve".