201111111112 has 64 divisors (see below), whose sum is σ = 389268633600. Its totient is φ = 97349091840.

The previous prime is 201111111109. The next prime is 201111111133. The reversal of 201111111112 is 211111111102.

It is a junction number, because it is equal to n+sod(n) for n = 201111111092 and 201111111101.

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, 70292562 + ... + 70295422.

It is an arithmetic number, because the mean of its divisors is an integer number (6082322400).

Almost surely, 2^201111111112 is an apocalyptic number.

It is an amenable number.

201111111112 is a deficient number, since it is larger than the sum of its proper divisors (188157522488).

201111111112 is a wasteful number, since it uses less digits than its factorization.

201111111112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4646 (or 4642 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 201111111112 its reverse (211111111102), we get a palindrome (412222222214).

The spelling of 201111111112 in words is "two hundred one billion, one hundred eleven million, one hundred eleven thousand, one hundred twelve".