20125330221 has 8 divisors (see below), whose sum is σ = 27234277984. Its totient is φ = 13216634640.

The previous prime is 20125330217. The next prime is 20125330223. The reversal of 20125330221 is 12203352102.

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

It is not a de Polignac number, because 20125330221 - 2² = 20125330217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20125330223) 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, 50062810 + ... + 50063211.

It is an arithmetic number, because the mean of its divisors is an integer number (3404284748).

Almost surely, 2^20125330221 is an apocalyptic number.

It is an amenable number.

20125330221 is a deficient number, since it is larger than the sum of its proper divisors (7108947763).

20125330221 is a wasteful number, since it uses less digits than its factorization.

20125330221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100126091.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 20125330221 its reverse (12203352102), we get a palindrome (32328682323).

The spelling of 20125330221 in words is "twenty billion, one hundred twenty-five million, three hundred thirty thousand, two hundred twenty-one".