23021020221 has 8 divisors (see below), whose sum is σ = 30701944800. Its totient is φ = 15343721232.

The previous prime is 23021020219. The next prime is 23021020223. The reversal of 23021020221 is 12202012032.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (23021020219) and next prime (23021020223).

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

It is not a de Polignac number, because 23021020221 - 2¹ = 23021020219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23021020221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23021020223) 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, 891546 + ... + 917003.

It is an arithmetic number, because the mean of its divisors is an integer number (3837743100).

Almost surely, 2^23021020221 is an apocalyptic number.

It is an amenable number.

23021020221 is a deficient number, since it is larger than the sum of its proper divisors (7680924579).

23021020221 is a wasteful number, since it uses less digits than its factorization.

23021020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1812795.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 23021020221 its reverse (12202012032), we get a palindrome (35223032253).

The spelling of 23021020221 in words is "twenty-three billion, twenty-one million, twenty thousand, two hundred twenty-one".