20304221254 has 4 divisors (see below), whose sum is σ = 30456331884. Its totient is φ = 10152110626.

The previous prime is 20304221227. The next prime is 20304221257. The reversal of 20304221254 is 45212240302.

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

It is a super-2 number, since 2×20304221254² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20304221257) 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 as a sum of consecutive naturals, namely, 5076055312 + ... + 5076055315.

It is an arithmetic number, because the mean of its divisors is an integer number (7614082971).

Almost surely, 2^20304221254 is an apocalyptic number.

20304221254 is a deficient number, since it is larger than the sum of its proper divisors (10152110630).

20304221254 is a wasteful number, since it uses less digits than its factorization.

20304221254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10152110629.

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 20304221254 its reverse (45212240302), we get a palindrome (65516461556).

The spelling of 20304221254 in words is "twenty billion, three hundred four million, two hundred twenty-one thousand, two hundred fifty-four".