20450021230 has 16 divisors (see below), whose sum is σ = 36811674720. Its totient is φ = 8179644832.

The previous prime is 20450021209. The next prime is 20450021297. The reversal of 20450021230 is 3212005402.

It is a junction number, because it is equal to n+sod(n) for n = 20450021198 and 20450021207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 383247 + ... + 433333.

It is an arithmetic number, because the mean of its divisors is an integer number (2300729670).

Almost surely, 2^20450021230 is an apocalyptic number.

20450021230 is a deficient number, since it is larger than the sum of its proper divisors (16361653490).

20450021230 is a wasteful number, since it uses less digits than its factorization.

20450021230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90923.

The product of its (nonzero) digits is 480, while the sum is 19.

Adding to 20450021230 its reverse (3212005402), we get a palindrome (23662026632).

The spelling of 20450021230 in words is "twenty billion, four hundred fifty million, twenty-one thousand, two hundred thirty".