1100221021200 has 240 divisors, whose sum is σ = 4264790071680. Its totient is φ = 236686172160.

The previous prime is 1100221021177. The next prime is 1100221021231. The reversal of 1100221021200 is 21201220011.

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 (12).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3709515 + ... + 3995114.

It is an arithmetic number, because the mean of its divisors is an integer number (17769958632).

Almost surely, 2^{1100221021200} is an apocalyptic number.

1100221021200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100221021200 is an abundant number, since it is smaller than the sum of its proper divisors (3164569050480).

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

1100221021200 is a wasteful number, since it uses less digits than its factorization.

1100221021200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7704674 (or 7704663 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1100221021200 its reverse (21201220011), we get a palindrome (1121422241211).

The spelling of 1100221021200 in words is "one trillion, one hundred billion, two hundred twenty-one million, twenty-one thousand, two hundred".