210121212212 has 48 divisors (see below), whose sum is σ = 373064408640. Its totient is φ = 103545268992.

The previous prime is 210121212209. The next prime is 210121212227. The reversal of 210121212212 is 212212121012.

210121212212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 45253163 + ... + 45257805.

It is an arithmetic number, because the mean of its divisors is an integer number (7772175180).

Almost surely, 2^210121212212 is an apocalyptic number.

It is an amenable number.

210121212212 is a deficient number, since it is larger than the sum of its proper divisors (162943196428).

210121212212 is a wasteful number, since it uses less digits than its factorization.

210121212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5360 (or 5358 counting only the distinct ones).

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

Adding to 210121212212 its reverse (212212121012), we get a palindrome (422333333224).

The spelling of 210121212212 in words is "two hundred ten billion, one hundred twenty-one million, two hundred twelve thousand, two hundred twelve".