212121303121212 has 96 divisors (see below), whose sum is σ = 497367148787712. Its totient is φ = 70362334396416.

The previous prime is 212121303121193. The next prime is 212121303121219.

212121303121212 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×212121303121212² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212121303121219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15252837163 + ... + 15252851069.

It is an arithmetic number, because the mean of its divisors is an integer number (5180907799872).

Almost surely, 2^{212121303121212} is an apocalyptic number.

It is an amenable number.

212121303121212 is an abundant number, since it is smaller than the sum of its proper divisors (285245845666500).

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

212121303121212 is a wasteful number, since it uses less digits than its factorization.

212121303121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18707 (or 18705 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

It can be divided in two parts, 21212130 and 3121212, that added together give a palindrome (24333342).

The spelling of 212121303121212 in words is "two hundred twelve trillion, one hundred twenty-one billion, three hundred three million, one hundred twenty-one thousand, two hundred twelve".