201211111111000 has 64 divisors (see below), whose sum is σ = 471255519178080. Its totient is φ = 80412389884800.

The previous prime is 201211111110991. The next prime is 201211111111061. The reversal of 201211111111000 is 111111112102.

It is a super-2 number, since 2×201211111111000² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

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, 88950642 + ... + 91184641.

Almost surely, 2^{201211111111000} is an apocalyptic number.

201211111111000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201211111111000 is an abundant number, since it is smaller than the sum of its proper divisors (270044408067080).

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

201211111111000 is a wasteful number, since it uses less digits than its factorization.

201211111111000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180136421 (or 180136407 counting only the distinct ones).

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

Adding to 201211111111000 its reverse (111111112102), we get a palindrome (201322222223102).

The spelling of 201211111111000 in words is "two hundred one trillion, two hundred eleven billion, one hundred eleven million, one hundred eleven thousand".