1103221213100 has 72 divisors (see below), whose sum is σ = 2503208617728. Its totient is φ = 421234862400.

The previous prime is 1103221213079. The next prime is 1103221213141. The reversal of 1103221213100 is 13121223011.

It is a super-2 number, since 2×1103221213100² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 627635 + ... + 1612565.

Almost surely, 2^{1103221213100} is an apocalyptic number.

1103221213100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1103221213100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1251604308864).

1103221213100 is an abundant number, since it is smaller than the sum of its proper divisors (1399987404628).

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

1103221213100 is a wasteful number, since it uses less digits than its factorization.

1103221213100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985455 (or 985448 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1103221213100 its reverse (13121223011), we get a palindrome (1116342436111).

The spelling of 1103221213100 in words is "one trillion, one hundred three billion, two hundred twenty-one million, two hundred thirteen thousand, one hundred".