1000210000020 has 576 divisors, whose sum is σ = 3760598016000. Its totient is φ = 196881027840.

The previous prime is 1000209999983. The next prime is 1000210000037. The reversal of 1000210000020 is 200000120001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a junction number, because it is equal to n+sod(n) for n = 1000209999963 and 1000210000008.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 81717061 + ... + 81729299.

It is an arithmetic number, because the mean of its divisors is an integer number (6528816000).

Almost surely, 2^{1000210000020} is an apocalyptic number.

1000210000020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1000210000020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1880299008000).

1000210000020 is an abundant number, since it is smaller than the sum of its proper divisors (2760388015980).

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

1000210000020 is a wasteful number, since it uses less digits than its factorization.

1000210000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12321 (or 12286 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 6.

Adding to 1000210000020 its reverse (200000120001), we get a palindrome (1200210120021).

The spelling of 1000210000020 in words is "one trillion, two hundred ten million, twenty", and thus it is an aban number.