11211011321200 has 60 divisors (see below), whose sum is σ = 26934838200648. Its totient is φ = 4484340678400.

The previous prime is 11211011321173. The next prime is 11211011321201. The reversal of 11211011321200 is 212311011211.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211011321201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36234354 + ... + 36542446.

Almost surely, 2^{11211011321200} is an apocalyptic number.

11211011321200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11211011321200 is an abundant number, since it is smaller than the sum of its proper divisors (15723826879448).

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

11211011321200 is a wasteful number, since it uses less digits than its factorization.

11211011321200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399082 (or 399071 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 11211011321200 its reverse (212311011211), we get a palindrome (11423322332411).

The spelling of 11211011321200 in words is "eleven trillion, two hundred eleven billion, eleven million, three hundred twenty-one thousand, two hundred".