1021331103044 has 48 divisors (see below), whose sum is σ = 2083347896448. Its totient is φ = 429068544768.

The previous prime is 1021331103011. The next prime is 1021331103049. The reversal of 1021331103044 is 4403011331201.

It is not an unprimeable number, because it can be changed into a prime (1021331103049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1199567 + ... + 1865910.

It is an arithmetic number, because the mean of its divisors is an integer number (43403081176).

Almost surely, 2^{1021331103044} is an apocalyptic number.

1021331103044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1021331103044 is an abundant number, since it is smaller than the sum of its proper divisors (1062016793404).

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

1021331103044 is a wasteful number, since it uses less digits than its factorization.

1021331103044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3065724 (or 3065722 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1021331103044 its reverse (4403011331201), we get a palindrome (5424342434245).

The spelling of 1021331103044 in words is "one trillion, twenty-one billion, three hundred thirty-one million, one hundred three thousand, forty-four".