10021573221 has 8 divisors (see below), whose sum is σ = 14576833824. Its totient is φ = 6073680720.

The previous prime is 10021573201. The next prime is 10021573223. The reversal of 10021573221 is 12237512001.

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

It is not a de Polignac number, because 10021573221 - 2¹¹ = 10021571173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10021573191 and 10021573200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021573223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151841986 + ... + 151842051.

It is an arithmetic number, because the mean of its divisors is an integer number (1822104228).

Almost surely, 2^10021573221 is an apocalyptic number.

10021573221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10021573221 is a deficient number, since it is larger than the sum of its proper divisors (4555260603).

10021573221 is a wasteful number, since it uses less digits than its factorization.

10021573221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303684051.

The product of its (nonzero) digits is 840, while the sum is 24.

The spelling of 10021573221 in words is "ten billion, twenty-one million, five hundred seventy-three thousand, two hundred twenty-one".