211111201120 has 24 divisors (see below), whose sum is σ = 498750213024. Its totient is φ = 84444480384.

The previous prime is 211111201117. The next prime is 211111201123. The reversal of 211111201120 is 21102111112.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (211111201117) and next prime (211111201123).

It is a self number, because there is not a number n which added to its sum of digits gives 211111201120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211111201123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 659722344 + ... + 659722663.

It is an arithmetic number, because the mean of its divisors is an integer number (20781258876).

Almost surely, 2^211111201120 is an apocalyptic number.

211111201120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211111201120 is an abundant number, since it is smaller than the sum of its proper divisors (287639011904).

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

211111201120 is a wasteful number, since it uses less digits than its factorization.

211111201120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319445022 (or 1319445014 counting only the distinct ones).

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

Adding to 211111201120 its reverse (21102111112), we get a palindrome (232213312232).

The spelling of 211111201120 in words is "two hundred eleven billion, one hundred eleven million, two hundred one thousand, one hundred twenty".