11211020101200 has 120 divisors (see below), whose sum is σ = 36120222541728. Its totient is φ = 2972324349440.

The previous prime is 11211020101139. The next prime is 11211020101207. The reversal of 11211020101200 is 210102011211.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211020101207) 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, 26793894 + ... + 27209093.

Almost surely, 2^{11211020101200} is an apocalyptic number.

11211020101200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11211020101200 is an abundant number, since it is smaller than the sum of its proper divisors (24909202440528).

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

11211020101200 is a wasteful number, since it uses less digits than its factorization.

11211020101200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54003181 (or 54003170 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11211020101200 its reverse (210102011211), we get a palindrome (11421122112411).

The spelling of 11211020101200 in words is "eleven trillion, two hundred eleven billion, twenty million, one hundred one thousand, two hundred".