201111122031212 has 48 divisors (see below), whose sum is σ = 390462608555712. Its totient is φ = 90150096875520.

The previous prime is 201111122031191. The next prime is 201111122031221. The reversal of 201111122031212 is 212130221111102.

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, 266402483 + ... + 267156330.

It is an arithmetic number, because the mean of its divisors is an integer number (8134637678244).

Almost surely, 2^{201111122031212} is an apocalyptic number.

It is an amenable number.

201111122031212 is a deficient number, since it is larger than the sum of its proper divisors (189351486524500).

201111122031212 is a wasteful number, since it uses less digits than its factorization.

201111122031212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533559098 (or 533559096 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 201111122031212 its reverse (212130221111102), we get a palindrome (413241343142314).

The spelling of 201111122031212 in words is "two hundred one trillion, one hundred eleven billion, one hundred twenty-two million, thirty-one thousand, two hundred twelve".