210212121212 has 24 divisors (see below), whose sum is σ = 383881680000. Its totient is φ = 100532023856.

The previous prime is 210212121209. The next prime is 210212121257. The reversal of 210212121212 is 212121212012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4253339 + ... + 4302477.

It is an arithmetic number, because the mean of its divisors is an integer number (15995070000).

Almost surely, 2^210212121212 is an apocalyptic number.

It is an amenable number.

210212121212 is a deficient number, since it is larger than the sum of its proper divisors (173669558788).

210212121212 is a wasteful number, since it uses less digits than its factorization.

210212121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95665 (or 95663 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 210212121212 its reverse (212121212012), we get a palindrome (422333333224).

The spelling of 210212121212 in words is "two hundred ten billion, two hundred twelve million, one hundred twenty-one thousand, two hundred twelve".