20301244421 has 4 divisors (see below), whose sum is σ = 20353433100. Its totient is φ = 20249055744.

The previous prime is 20301244357. The next prime is 20301244429. The reversal of 20301244421 is 12444210302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11030250625 + 9270993796 = 105025^2 + 96286^2 .

It is a cyclic number.

It is not a de Polignac number, because 20301244421 - 2⁶ = 20301244357 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 (20301244429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26093756 + ... + 26094533.

It is an arithmetic number, because the mean of its divisors is an integer number (5088358275).

Almost surely, 2^20301244421 is an apocalyptic number.

It is an amenable number.

20301244421 is a deficient number, since it is larger than the sum of its proper divisors (52188679).

20301244421 is an equidigital number, since it uses as much as digits as its factorization.

20301244421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52188678.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 20301244421 its reverse (12444210302), we get a palindrome (32745454723).

The spelling of 20301244421 in words is "twenty billion, three hundred one million, two hundred forty-four thousand, four hundred twenty-one".