210111212201212 has 24 divisors (see below), whose sum is σ = 420222735759456. Its totient is φ = 90047595652608.

The previous prime is 210111212201183. The next prime is 210111212201213. The reversal of 210111212201212 is 212102212111012.

It is a happy number.

210111212201212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 210111212201212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210111212201213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62952228 + ... + 66205780.

It is an arithmetic number, because the mean of its divisors is an integer number (17509280656644).

Almost surely, 2^{210111212201212} is an apocalyptic number.

It is an amenable number.

210111212201212 is an abundant number, since it is smaller than the sum of its proper divisors (210111523558244).

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

210111212201212 is a wasteful number, since it uses less digits than its factorization.

210111212201212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5559957 (or 5559955 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 210111212201212 its reverse (212102212111012), we get a palindrome (422213424312224).

The spelling of 210111212201212 in words is "two hundred ten trillion, one hundred eleven billion, two hundred twelve million, two hundred one thousand, two hundred twelve".