1103111132420 has 48 divisors (see below), whose sum is σ = 2564845674048. Its totient is φ = 395144280960.

The previous prime is 1103111132401. The next prime is 1103111132509. The reversal of 1103111132420 is 242311113011.

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

It is a junction number, because it is equal to n+sod(n) for n = 1103111132392 and 1103111132401.

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 15 ways as a sum of consecutive naturals, for example, 37404227 + ... + 37433706.

It is an arithmetic number, because the mean of its divisors is an integer number (53434284876).

Almost surely, 2^{1103111132420} is an apocalyptic number.

1103111132420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1103111132420 is an abundant number, since it is smaller than the sum of its proper divisors (1461734541628).

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

1103111132420 is a wasteful number, since it uses less digits than its factorization.

1103111132420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74838020 (or 74838018 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1103111132420 its reverse (242311113011), we get a palindrome (1345422245431).

The spelling of 1103111132420 in words is "one trillion, one hundred three billion, one hundred eleven million, one hundred thirty-two thousand, four hundred twenty".