1020570221 has 8 divisors (see below), whose sum is σ = 1120181664. Its totient is φ = 922097520.

The previous prime is 1020570157. The next prime is 1020570227. The reversal of 1020570221 is 1220750201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1020570221 - 2⁶ = 1020570157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020570193 and 1020570202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020570227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282806 + ... + 286391.

It is an arithmetic number, because the mean of its divisors is an integer number (140022708).

Almost surely, 2^1020570221 is an apocalyptic number.

1020570221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1020570221 is a deficient number, since it is larger than the sum of its proper divisors (99611443).

1020570221 is a wasteful number, since it uses less digits than its factorization.

1020570221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569371.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 1020570221 is about 31946.3647540687. The cubic root of 1020570221 is about 1006.8102554682.

The spelling of 1020570221 in words is "one billion, twenty million, five hundred seventy thousand, two hundred twenty-one".