210220121212 has 12 divisors (see below), whose sum is σ = 369628745416. Its totient is φ = 104611908240.

The previous prime is 210220121201. The next prime is 210220121219. The reversal of 210220121212 is 212121022012.

It is a happy number.

210220121212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210220121219) 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 3 ways as a sum of consecutive naturals, for example, 124537143 + ... + 124538830.

Almost surely, 2^210220121212 is an apocalyptic number.

It is an amenable number.

210220121212 is a deficient number, since it is larger than the sum of its proper divisors (159408624204).

210220121212 is a wasteful number, since it uses less digits than its factorization.

210220121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249076188 (or 249076186 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 210220121212 its reverse (212121022012), we get a palindrome (422341143224).

The spelling of 210220121212 in words is "two hundred ten billion, two hundred twenty million, one hundred twenty-one thousand, two hundred twelve".