212121102002 has 16 divisors (see below), whose sum is σ = 320273351232. Its totient is φ = 105363886320.

The previous prime is 212121102001. The next prime is 212121102047. The reversal of 212121102002 is 200201121212.

212121102002 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×212121102002³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (212121102001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 612608 + ... + 894164.

It is an arithmetic number, because the mean of its divisors is an integer number (20017084452).

Almost surely, 2^212121102002 is an apocalyptic number.

212121102002 is a deficient number, since it is larger than the sum of its proper divisors (108152249230).

212121102002 is a wasteful number, since it uses less digits than its factorization.

212121102002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284033.

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

Adding to 212121102002 its reverse (200201121212), we get a palindrome (412322223214).

The spelling of 212121102002 in words is "two hundred twelve billion, one hundred twenty-one million, one hundred two thousand, two".