212121013302 has 80 divisors (see below), whose sum is σ = 545808542400. Its totient is φ = 60895974960.

The previous prime is 212121013301. The next prime is 212121013337. The reversal of 212121013302 is 203310121212.

212121013302 is a `hidden beast` number, since 2 + 121 + 210 + 1 + 330 + 2 = 666.

212121013302 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 3×212121013302³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212121013301) 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 39 ways as a sum of consecutive naturals, for example, 3098652 + ... + 3166367.

It is an arithmetic number, because the mean of its divisors is an integer number (6822606780).

Almost surely, 2^212121013302 is an apocalyptic number.

212121013302 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212121013302 is an abundant number, since it is smaller than the sum of its proper divisors (333687529098).

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

212121013302 is a wasteful number, since it uses less digits than its factorization.

212121013302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6265063 (or 6265054 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 212121013302 its reverse (203310121212), we get a palindrome (415431134514).

The spelling of 212121013302 in words is "two hundred twelve billion, one hundred twenty-one million, thirteen thousand, three hundred two".