2000210100021 has 24 divisors (see below), whose sum is σ = 3391175600384. Its totient is φ = 1112085923040.

The previous prime is 2000210100019. The next prime is 2000210100071. The reversal of 2000210100021 is 1200010120002.

It is not a de Polignac number, because 2000210100021 - 2¹ = 2000210100019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2000210099976 and 2000210100012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2000210100071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 429043165 + ... + 429047826.

Almost surely, 2^{2000210100021} is an apocalyptic number.

2000210100021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2000210100021 is a deficient number, since it is larger than the sum of its proper divisors (1390965500363).

2000210100021 is a wasteful number, since it uses less digits than its factorization.

2000210100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858091041 (or 858091038 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 2000210100021 its reverse (1200010120002), we get a palindrome (3200220220023).

The spelling of 2000210100021 in words is "two trillion, two hundred ten million, one hundred thousand, twenty-one".