1101221102100 has 144 divisors (see below), whose sum is σ = 3670044213248. Its totient is φ = 249725669760.

The previous prime is 1101221102077. The next prime is 1101221102143. The reversal of 1101221102100 is 12011221011.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1797832 + ... + 2331231.

Almost surely, 2^{1101221102100} is an apocalyptic number.

1101221102100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1101221102100 is an abundant number, since it is smaller than the sum of its proper divisors (2568823111148).

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

1101221102100 is a wasteful number, since it uses less digits than its factorization.

1101221102100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4129214 (or 4129207 counting only the distinct ones).

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

Adding to 1101221102100 its reverse (12011221011), we get a palindrome (1113232323111).

The spelling of 1101221102100 in words is "one trillion, one hundred one billion, two hundred twenty-one million, one hundred two thousand, one hundred".