1103541221000 has 64 divisors (see below), whose sum is σ = 2583363144960. Its totient is φ = 441232440000.

The previous prime is 1103541220987. The next prime is 1103541221023. The reversal of 1103541221000 is 1221453011.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2182145 + ... + 2639855.

It is an arithmetic number, because the mean of its divisors is an integer number (40365049140).

Almost surely, 2^{1103541221000} is an apocalyptic number.

1103541221000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1103541221000 is an abundant number, since it is smaller than the sum of its proper divisors (1479821923960).

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

1103541221000 is a wasteful number, since it uses less digits than its factorization.

1103541221000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460143 (or 460129 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 1103541221000 its reverse (1221453011), we get a palindrome (1104762674011).

The spelling of 1103541221000 in words is "one trillion, one hundred three billion, five hundred forty-one million, two hundred twenty-one thousand".