2003213121300 has 108 divisors (see below), whose sum is σ = 6291297552540. Its totient is φ = 533140554240.

The previous prime is 2003213121233. The next prime is 2003213121307. The reversal of 2003213121300 is 31213123002.

2003213121300 is a `hidden beast` number, since 2 + 0 + 0 + 321 + 312 + 1 + 30 + 0 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 11287362564 + 1991925758736 = 106242^2 + 1411356^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2003213121307) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1728337 + ... + 2644536.

Almost surely, 2^{2003213121300} is an apocalyptic number.

2003213121300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2003213121300 is an abundant number, since it is smaller than the sum of its proper divisors (4288084431240).

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

2003213121300 is a wasteful number, since it uses less digits than its factorization.

2003213121300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4373402 (or 4373392 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 2003213121300 its reverse (31213123002), we get a palindrome (2034426244302).

The spelling of 2003213121300 in words is "two trillion, three billion, two hundred thirteen million, one hundred twenty-one thousand, three hundred".