201211211212 has 108 divisors (see below), whose sum is σ = 421960444360. Its totient is φ = 83654968320.

The previous prime is 201211211189. The next prime is 201211211239. The reversal of 201211211212 is 212112112102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7720828 + ... + 7746844.

Almost surely, 2^201211211212 is an apocalyptic number.

201211211212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

201211211212 is an abundant number, since it is smaller than the sum of its proper divisors (220749233148).

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

201211211212 is a wasteful number, since it uses less digits than its factorization.

201211211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26120 (or 26078 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 201211211212 its reverse (212112112102), we get a palindrome (413323323314).

The spelling of 201211211212 in words is "two hundred one billion, two hundred eleven million, two hundred eleven thousand, two hundred twelve".