1001103453020 has 24 divisors (see below), whose sum is σ = 2293437001968. Its totient is φ = 364037619200.

The previous prime is 1001103453019. The next prime is 1001103453067. The reversal of 1001103453020 is 203543011001.

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 = 1001103452983 and 1001103453001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2275234901 + ... + 2275235340.

It is an arithmetic number, because the mean of its divisors is an integer number (95559875082).

Almost surely, 2^{1001103453020} is an apocalyptic number.

1001103453020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001103453020 is an abundant number, since it is smaller than the sum of its proper divisors (1292333548948).

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

1001103453020 is a wasteful number, since it uses less digits than its factorization.

1001103453020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4550470261 (or 4550470259 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 1001103453020 its reverse (203543011001), we get a palindrome (1204646464021).

The spelling of 1001103453020 in words is "one trillion, one billion, one hundred three million, four hundred fifty-three thousand, twenty".