1103121203100 has 72 divisors (see below), whose sum is σ = 3647654118528. Its totient is φ = 252141988800.

The previous prime is 1103121203099. The next prime is 1103121203111. The reversal of 1103121203100 is 13021213011.

It is a happy number.

It is a super-2 number, since 2×1103121203100² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1103121203100.

It is a congruent number.

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, 262645806 + ... + 262650005.

Almost surely, 2^{1103121203100} is an apocalyptic number.

1103121203100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1103121203100 is an abundant number, since it is smaller than the sum of its proper divisors (2544532915428).

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

1103121203100 is a wasteful number, since it uses less digits than its factorization.

1103121203100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525295835 (or 525295828 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 1103121203100 its reverse (13021213011), we get a palindrome (1116142416111).

The spelling of 1103121203100 in words is "one trillion, one hundred three billion, one hundred twenty-one million, two hundred three thousand, one hundred".