1021131003004 has 96 divisors (see below), whose sum is σ = 2096501299200. Its totient is φ = 426073471488.

The previous prime is 1021131002977. The next prime is 1021131003089. The reversal of 1021131003004 is 4003001311201.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 925775517 + ... + 925776619.

It is an arithmetic number, because the mean of its divisors is an integer number (21838555200).

Almost surely, 2^{1021131003004} is an apocalyptic number.

1021131003004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1021131003004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1048250649600).

1021131003004 is an abundant number, since it is smaller than the sum of its proper divisors (1075370296196).

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

1021131003004 is a wasteful number, since it uses less digits than its factorization.

1021131003004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2939 (or 2937 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1021131003004 its reverse (4003001311201), we get a palindrome (5024132314205).

The spelling of 1021131003004 in words is "one trillion, twenty-one billion, one hundred thirty-one million, three thousand, four".