1050021050520 has 128 divisors (see below), whose sum is σ = 3399704985600. Its totient is φ = 257908299264.

The previous prime is 1050021050483. The next prime is 1050021050569. The reversal of 1050021050520 is 250501200501.

It is a super-2 number, since 2×1050021050520² (a number of 25 digits) contains 22 as substring.

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, 4600 + ... + 1449159.

It is an arithmetic number, because the mean of its divisors is an integer number (26560195200).

Almost surely, 2^{1050021050520} is an apocalyptic number.

1050021050520 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 1050021050520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1699852492800).

1050021050520 is an abundant number, since it is smaller than the sum of its proper divisors (2349683935080).

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

1050021050520 is a wasteful number, since it uses less digits than its factorization.

1050021050520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1454249 (or 1454245 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 21.

The spelling of 1050021050520 in words is "one trillion, fifty billion, twenty-one million, fifty thousand, five hundred twenty".