20123103021200 has 30 divisors (see below), whose sum is σ = 48345755009394. Its totient is φ = 8049241208320.

The previous prime is 20123103021199. The next prime is 20123103021209. The reversal of 20123103021200 is 212030132102.

It can be written as a sum of positive squares in 3 ways, for example, as 3829254095104 + 16293848926096 = 1956848^2 + 4036564^2 .

It is not an unprimeable number, because it can be changed into a prime (20123103021209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25153878377 + ... + 25153879176.

Almost surely, 2^{20123103021200} is an apocalyptic number.

20123103021200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20123103021200 is an abundant number, since it is smaller than the sum of its proper divisors (28222651988194).

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

20123103021200 is a wasteful number, since it uses less digits than its factorization.

20123103021200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50307757571 (or 50307757560 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20123103021200 its reverse (212030132102), we get a palindrome (20335133153302).

The spelling of 20123103021200 in words is "twenty trillion, one hundred twenty-three billion, one hundred three million, twenty-one thousand, two hundred".