201111110120 has 64 divisors (see below), whose sum is σ = 461176761600. Its totient is φ = 78911965440.

The previous prime is 201111110113. The next prime is 201111110173. The reversal of 201111110120 is 21011111102.

It is a super-2 number, since 2×201111110120² (a number of 23 digits) contains 22 as substring.

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, 483530 + ... + 797510.

It is an arithmetic number, because the mean of its divisors is an integer number (7205886900).

Almost surely, 2^201111110120 is an apocalyptic number.

201111110120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201111110120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230588380800).

201111110120 is an abundant number, since it is smaller than the sum of its proper divisors (260065651480).

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

201111110120 is a wasteful number, since it uses less digits than its factorization.

201111110120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314298 (or 314294 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 201111110120 its reverse (21011111102), we get a palindrome (222122221222).

The spelling of 201111110120 in words is "two hundred one billion, one hundred eleven million, one hundred ten thousand, one hundred twenty".