1021543203044 has 48 divisors (see below), whose sum is σ = 2200338768768. Its totient is φ = 404110107648.

The previous prime is 1021543202993. The next prime is 1021543203071. The reversal of 1021543203044 is 4403023451201.

It is a super-3 number, since 3×1021543203044³ (a number of 37 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1021543202998 and 1021543203016.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12175124 + ... + 12258740.

It is an arithmetic number, because the mean of its divisors is an integer number (45840391016).

Almost surely, 2^{1021543203044} is an apocalyptic number.

1021543203044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1021543203044 is an abundant number, since it is smaller than the sum of its proper divisors (1178795565724).

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

1021543203044 is a wasteful number, since it uses less digits than its factorization.

1021543203044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117204 (or 117202 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 1021543203044 its reverse (4403023451201), we get a palindrome (5424566654245).

The spelling of 1021543203044 in words is "one trillion, twenty-one billion, five hundred forty-three million, two hundred three thousand, forty-four".