20121002230023 has 6 divisors (see below), whose sum is σ = 29063669887824. Its totient is φ = 13414001486676.

The previous prime is 20121002230001. The next prime is 20121002230117. The reversal of 20121002230023 is 32003220012102.

20121002230023 is a `hidden beast` number, since 201 + 210 + 0 + 2 + 230 + 0 + 23 = 666.

It is not a de Polignac number, because 20121002230023 - 2⁹ = 20121002229511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20121002229978 and 20121002230005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121002231023) 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 in 5 ways as a sum of consecutive naturals, for example, 1117833457215 + ... + 1117833457232.

It is an arithmetic number, because the mean of its divisors is an integer number (4843944981304).

Almost surely, 2^{20121002230023} is an apocalyptic number.

20121002230023 is a deficient number, since it is larger than the sum of its proper divisors (8942667657801).

20121002230023 is a wasteful number, since it uses less digits than its factorization.

20121002230023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2235666914453 (or 2235666914450 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20121002230023 its reverse (32003220012102), we get a palindrome (52124222242125).

The spelling of 20121002230023 in words is "twenty trillion, one hundred twenty-one billion, two million, two hundred thirty thousand, twenty-three".