210212122212 has 48 divisors (see below), whose sum is σ = 558286948800. Its totient is φ = 68361664320.

The previous prime is 210212122199. The next prime is 210212122229. The reversal of 210212122212 is 212221212012.

It is a happy number.

210212122212 is a `hidden beast` number, since 210 + 21 + 212 + 221 + 2 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23732262 + ... + 23741117.

It is an arithmetic number, because the mean of its divisors is an integer number (11630978100).

Almost surely, 2^210212122212 is an apocalyptic number.

It is an amenable number.

210212122212 is an abundant number, since it is smaller than the sum of its proper divisors (348074826588).

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

210212122212 is a wasteful number, since it uses less digits than its factorization.

210212122212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47473433 (or 47473425 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 210212122212 its reverse (212221212012), we get a palindrome (422433334224).

The spelling of 210212122212 in words is "two hundred ten billion, two hundred twelve million, one hundred twenty-two thousand, two hundred twelve".