202221212120 has 32 divisors (see below), whose sum is σ = 455010534000. Its totient is φ = 80886208128.

The previous prime is 202221212111. The next prime is 202221212161. The reversal of 202221212120 is 21212122202.

It is a happy number.

202221212120 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 3×202221212120³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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, 2707031 + ... + 2780729.

Almost surely, 2^202221212120 is an apocalyptic number.

202221212120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202221212120 is an abundant number, since it is smaller than the sum of its proper divisors (252789321880).

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

202221212120 is a wasteful number, since it uses less digits than its factorization.

202221212120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142307 (or 142303 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 202221212120 its reverse (21212122202), we get a palindrome (223433334322).

The spelling of 202221212120 in words is "two hundred two billion, two hundred twenty-one million, two hundred twelve thousand, one hundred twenty".