20001231212230 has 16 divisors (see below), whose sum is σ = 36004057797024. Its totient is φ = 8000083237120.

The previous prime is 20001231212197. The next prime is 20001231212309. The reversal of 20001231212230 is 3221213210002.

It is a junction number, because it is equal to n+sod(n) for n = 20001231212198 and 20001231212207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50950666 + ... + 51341725.

It is an arithmetic number, because the mean of its divisors is an integer number (2250253612314).

Almost surely, 2^{20001231212230} is an apocalyptic number.

20001231212230 is a deficient number, since it is larger than the sum of its proper divisors (16002826584794).

20001231212230 is a wasteful number, since it uses less digits than its factorization.

20001231212230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102311951.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20001231212230 its reverse (3221213210002), we get a palindrome (23222444422232).

The spelling of 20001231212230 in words is "twenty trillion, one billion, two hundred thirty-one million, two hundred twelve thousand, two hundred thirty".