212121101121212 has 72 divisors (see below), whose sum is σ = 381793466466720. Its totient is φ = 103118663208960.

The previous prime is 212121101121199. The next prime is 212121101121221.

It is a happy number.

212121101121212 is nontrivially palindromic in base 10.

212121101121212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×212121101121212³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1405808012 + ... + 1405958892.

It is an arithmetic number, because the mean of its divisors is an integer number (5302687034260).

Almost surely, 2^{212121101121212} is an apocalyptic number.

It is an amenable number.

212121101121212 is a deficient number, since it is larger than the sum of its proper divisors (169672365345508).

212121101121212 is a wasteful number, since it uses less digits than its factorization.

212121101121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151843 (or 151798 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 20.

It can be divided in two parts, 21212110 and 1121212, that added together give a palindrome (22333322).

The spelling of 212121101121212 in words is "two hundred twelve trillion, one hundred twenty-one billion, one hundred one million, one hundred twenty-one thousand, two hundred twelve".