20321323123012 has 6 divisors (see below), whose sum is σ = 35562315465278. Its totient is φ = 10160661561504.

The previous prime is 20321323123009. The next prime is 20321323123037. The reversal of 20321323123012 is 21032132312302.

It can be written as a sum of positive squares in only one way, i.e., 15461520508996 + 4859802614016 = 3932114^2 + 2204496^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2540165390373 + ... + 2540165390380.

Almost surely, 2^{20321323123012} is an apocalyptic number.

It is an amenable number.

20321323123012 is a deficient number, since it is larger than the sum of its proper divisors (15240992342266).

20321323123012 is a wasteful number, since it uses less digits than its factorization.

20321323123012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5080330780757 (or 5080330780755 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 20321323123012 its reverse (21032132312302), we get a palindrome (41353455435314).

The spelling of 20321323123012 in words is "twenty trillion, three hundred twenty-one billion, three hundred twenty-three million, one hundred twenty-three thousand, twelve".