20004301221 has 32 divisors (see below), whose sum is σ = 29336878080. Its totient is φ = 12068496000.

The previous prime is 20004301199. The next prime is 20004301223. The reversal of 20004301221 is 12210340002.

It is not a de Polignac number, because 20004301221 - 2⁶ = 20004301157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20004301221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20004301223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 987646 + ... + 1007696.

It is an arithmetic number, because the mean of its divisors is an integer number (916777440).

Almost surely, 2^20004301221 is an apocalyptic number.

It is an amenable number.

20004301221 is a deficient number, since it is larger than the sum of its proper divisors (9332576859).

20004301221 is a wasteful number, since it uses less digits than its factorization.

20004301221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20857.

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

Adding to 20004301221 its reverse (12210340002), we get a palindrome (32214641223).

The spelling of 20004301221 in words is "twenty billion, four million, three hundred one thousand, two hundred twenty-one".