10021650221 has 8 divisors (see below), whose sum is σ = 10933442688. Its totient is φ = 9109980000.

The previous prime is 10021650203. The next prime is 10021650227. The reversal of 10021650221 is 12205612001.

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

It is not a de Polignac number, because 10021650221 - 2¹⁴ = 10021633837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10021650193 and 10021650202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021650227) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 266156 + ... + 301466.

It is an arithmetic number, because the mean of its divisors is an integer number (1366680336).

Almost surely, 2^10021650221 is an apocalyptic number.

10021650221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10021650221 is a deficient number, since it is larger than the sum of its proper divisors (911792467).

10021650221 is a wasteful number, since it uses less digits than its factorization.

10021650221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61123.

The product of its (nonzero) digits is 240, while the sum is 20.

The spelling of 10021650221 in words is "ten billion, twenty-one million, six hundred fifty thousand, two hundred twenty-one".