1021003411440 has 160 divisors (see below), whose sum is σ = 3208294941696. Its totient is φ = 268573409280.

The previous prime is 1021003411343. The next prime is 1021003411459. The reversal of 1021003411440 is 441143001201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6272685 + ... + 6433395.

Almost surely, 2^{1021003411440} is an apocalyptic number.

1021003411440 is a gapful number since it is divisible by the number (10) 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 1021003411440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1604147470848).

1021003411440 is an abundant number, since it is smaller than the sum of its proper divisors (2187291530256).

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

1021003411440 is a wasteful number, since it uses less digits than its factorization.

1021003411440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161087 (or 161081 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 1021003411440 its reverse (441143001201), we get a palindrome (1462146412641).

The spelling of 1021003411440 in words is "one trillion, twenty-one billion, three million, four hundred eleven thousand, four hundred forty".