1011011101200 has 240 divisors, whose sum is σ = 3754905920640. Its totient is φ = 257881029120.

The previous prime is 1011011101187. The next prime is 1011011101207. The reversal of 1011011101200 is 21011101101.

It is a tau number, because it is divible by the number of its divisors (240).

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

It is not an unprimeable number, because it can be changed into a prime (1011011101207) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1786647 + ... + 2283446.

It is an arithmetic number, because the mean of its divisors is an integer number (15645441336).

Almost surely, 2^{1011011101200} is an apocalyptic number.

1011011101200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011011101200 is an abundant number, since it is smaller than the sum of its proper divisors (2743894819440).

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

1011011101200 is a wasteful number, since it uses less digits than its factorization.

1011011101200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4070143 (or 4070126 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 1011011101200 its reverse (21011101101), we get a palindrome (1032022202301).

Subtracting from 1011011101200 its reverse (21011101101), we obtain a palindrome (990000000099).

The spelling of 1011011101200 in words is "one trillion, eleven billion, eleven million, one hundred one thousand, two hundred".