21031010203000 has 128 divisors (see below), whose sum is σ = 56601168324480. Its totient is φ = 7164704102400.

The previous prime is 21031010202997. The next prime is 21031010203001. The reversal of 21031010203000 is 30201013012.

It is a super-3 number, since 3×21031010203000³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21031010203001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8469249 + ... + 10667248.

It is an arithmetic number, because the mean of its divisors is an integer number (442196627535).

Almost surely, 2^{21031010203000} is an apocalyptic number.

21031010203000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21031010203000 is an abundant number, since it is smaller than the sum of its proper divisors (35570158121480).

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

21031010203000 is a wasteful number, since it uses less digits than its factorization.

21031010203000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19136682 (or 19136668 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 21031010203000 its reverse (30201013012), we get a palindrome (21061211216012).

The spelling of 21031010203000 in words is "twenty-one trillion, thirty-one billion, ten million, two hundred three thousand".