2011200120 has 96 divisors (see below), whose sum is σ = 6713104320. Its totient is φ = 521821440.

The previous prime is 2011200119. The next prime is 2011200127. The reversal of 2011200120 is 210021102.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011200127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62176 + ... + 88815.

It is an arithmetic number, because the mean of its divisors is an integer number (69928170).

Almost surely, 2^2011200120 is an apocalyptic number.

2011200120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2011200120 is an abundant number, since it is smaller than the sum of its proper divisors (4701904200).

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

2011200120 is a wasteful number, since it uses less digits than its factorization.

2011200120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151045 (or 151038 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 2011200120 is about 44846.4058760566. The cubic root of 2011200120 is about 1262.2685511086.

Adding to 2011200120 its reverse (210021102), we get a palindrome (2221221222).

The spelling of 2011200120 in words is "two billion, eleven million, two hundred thousand, one hundred twenty".