212121003202 has 16 divisors (see below), whose sum is σ = 321489705600. Its totient is φ = 104957958528.

The previous prime is 212121003181. The next prime is 212121003209. The reversal of 212121003202 is 202300121212.

It is a happy number.

It is a super-3 number, since 3×212121003202³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (212121003209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2552299 + ... + 2634097.

It is an arithmetic number, because the mean of its divisors is an integer number (20093106600).

Almost surely, 2^212121003202 is an apocalyptic number.

212121003202 is a deficient number, since it is larger than the sum of its proper divisors (109368702398).

212121003202 is a wasteful number, since it uses less digits than its factorization.

212121003202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95265.

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

Adding to 212121003202 its reverse (202300121212), we get a palindrome (414421124414).

The spelling of 212121003202 in words is "two hundred twelve billion, one hundred twenty-one million, three thousand, two hundred two".