20130003221200 has 30 divisors (see below), whose sum is σ = 48362332739894. Its totient is φ = 8052001288320.

The previous prime is 20130003221173. The next prime is 20130003221221. The reversal of 20130003221200 is 212230003102.

It can be written as a sum of positive squares in 3 ways, for example, as 78987978304 + 20051015242896 = 281048^2 + 4477836^2 .

It is a super-2 number, since 2×20130003221200² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25162503627 + ... + 25162504426.

Almost surely, 2^{20130003221200} is an apocalyptic number.

20130003221200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20130003221200 is an abundant number, since it is smaller than the sum of its proper divisors (28232329518694).

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

20130003221200 is a wasteful number, since it uses less digits than its factorization.

20130003221200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50325008071 (or 50325008060 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20130003221200 its reverse (212230003102), we get a palindrome (20342233224302).

The spelling of 20130003221200 in words is "twenty trillion, one hundred thirty billion, three million, two hundred twenty-one thousand, two hundred".