21012102303000 has 128 divisors (see below), whose sum is σ = 65919958453440. Its totient is φ = 5572270080000.

The previous prime is 21012102302963. The next prime is 21012102303029. The reversal of 21012102303000 is 30320121012.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18805161 + ... + 19891160.

Almost surely, 2^{21012102303000} is an apocalyptic number.

21012102303000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21012102303000 is an abundant number, since it is smaller than the sum of its proper divisors (44907856150440).

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

21012102303000 is a wasteful number, since it uses less digits than its factorization.

21012102303000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38696526 (or 38696512 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21012102303000 its reverse (30320121012), we get a palindrome (21042422424012).

The spelling of 21012102303000 in words is "twenty-one trillion, twelve billion, one hundred two million, three hundred three thousand".