1021001886240 has 192 divisors, whose sum is σ = 3735863389440. Its totient is φ = 229546045440.

The previous prime is 1021001886137. The next prime is 1021001886263. The reversal of 1021001886240 is 426881001201.

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, 2285775 + ... + 2695694.

It is an arithmetic number, because the mean of its divisors is an integer number (19457621820).

Almost surely, 2^{1021001886240} is an apocalyptic number.

1021001886240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021001886240 is an abundant number, since it is smaller than the sum of its proper divisors (2714861503200).

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

1021001886240 is a wasteful number, since it uses less digits than its factorization.

1021001886240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4981555 (or 4981547 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 33.

Adding to 1021001886240 its reverse (426881001201), we get a palindrome (1447882887441).

The spelling of 1021001886240 in words is "one trillion, twenty-one billion, one million, eight hundred eighty-six thousand, two hundred forty".