20300032221 has 16 divisors (see below), whose sum is σ = 30948313728. Its totient is φ = 11594419200.

The previous prime is 20300032199. The next prime is 20300032289. The reversal of 20300032221 is 12223000302.

It is not a de Polignac number, because 20300032221 - 2¹⁵ = 20299999453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20300032221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20300030221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188560 + ... + 275961.

It is an arithmetic number, because the mean of its divisors is an integer number (1934269608).

Almost surely, 2^20300032221 is an apocalyptic number.

20300032221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20300032221 is a deficient number, since it is larger than the sum of its proper divisors (10648281507).

20300032221 is a wasteful number, since it uses less digits than its factorization.

20300032221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466612.

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 20300032221 its reverse (12223000302), we get a palindrome (32523032523).

The spelling of 20300032221 in words is "twenty billion, three hundred million, thirty-two thousand, two hundred twenty-one".