20021012323230 has 32 divisors (see below), whose sum is σ = 48058843650048. Its totient is φ = 5338001722400.

The previous prime is 20021012323229. The next prime is 20021012323241. The reversal of 20021012323230 is 3232321012002.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20021012323197 and 20021012323206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58256886 + ... + 58599545.

It is an arithmetic number, because the mean of its divisors is an integer number (1501838864064).

Almost surely, 2^{20021012323230} is an apocalyptic number.

20021012323230 is an abundant number, since it is smaller than the sum of its proper divisors (28037831326818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20021012323230 is a wasteful number, since it uses less digits than its factorization.

20021012323230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116862152.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 20021012323230 its reverse (3232321012002), we get a palindrome (23253333335232).

The spelling of 20021012323230 in words is "twenty trillion, twenty-one billion, twelve million, three hundred twenty-three thousand, two hundred thirty".