201101111212 has 6 divisors (see below), whose sum is σ = 351926944628. Its totient is φ = 100550555604.

The previous prime is 201101111173. The next prime is 201101111213. The reversal of 201101111212 is 212111101102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 201101111192 and 201101111201.

It is not an unprimeable number, because it can be changed into a prime (201101111213) by changing a digit.

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 as a sum of consecutive naturals, namely, 25137638898 + ... + 25137638905.

Almost surely, 2^201101111212 is an apocalyptic number.

It is an amenable number.

201101111212 is a deficient number, since it is larger than the sum of its proper divisors (150825833416).

201101111212 is a wasteful number, since it uses less digits than its factorization.

201101111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50275277807 (or 50275277805 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 201101111212 its reverse (212111101102), we get a palindrome (413212212314).

The spelling of 201101111212 in words is "two hundred one billion, one hundred one million, one hundred eleven thousand, two hundred twelve".