21030143000020 has 96 divisors (see below), whose sum is σ = 57958671697920. Its totient is φ = 6209857664640.

The previous prime is 21030142999969. The next prime is 21030143000033. The reversal of 21030143000020 is 2000034103012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21030142999958 and 21030143000003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 359337504 + ... + 359396023.

It is an arithmetic number, because the mean of its divisors is an integer number (603736163520).

Almost surely, 2^{21030143000020} is an apocalyptic number.

21030143000020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21030143000020 is an abundant number, since it is smaller than the sum of its proper divisors (36928528697900).

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

21030143000020 is a wasteful number, since it uses less digits than its factorization.

21030143000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718733573 (or 718733571 counting only the distinct ones).

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

Adding to 21030143000020 its reverse (2000034103012), we get a palindrome (23030177103032).

The spelling of 21030143000020 in words is "twenty-one trillion, thirty billion, one hundred forty-three million, twenty", and thus it is an aban number.