201111212012 has 12 divisors (see below), whose sum is σ = 363297673536. Its totient is φ = 97311876720.

The previous prime is 201111211999. The next prime is 201111212021. The reversal of 201111212012 is 210212111102.

It is a super-5 number, since 5×201111212012⁵ (a number of 58 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 810932183 + ... + 810932430.

It is an arithmetic number, because the mean of its divisors is an integer number (30274806128).

Almost surely, 2^201111212012 is an apocalyptic number.

It is an amenable number.

201111212012 is a deficient number, since it is larger than the sum of its proper divisors (162186461524).

201111212012 is a wasteful number, since it uses less digits than its factorization.

201111212012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1621864648 (or 1621864646 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 201111212012 its reverse (210212111102), we get a palindrome (411323323114).

The spelling of 201111212012 in words is "two hundred one billion, one hundred eleven million, two hundred twelve thousand, twelve".