2021000210 has 16 divisors (see below), whose sum is σ = 3638439000. Its totient is φ = 808258176.

The previous prime is 2021000147. The next prime is 2021000251. The reversal of 2021000210 is 120001202.

It can be written as a sum of positive squares in 4 ways, for example, as 1197367609 + 823632601 = 34603^2 + 28699^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57116 + ... + 85464.

Almost surely, 2^2021000210 is an apocalyptic number.

2021000210 is a deficient number, since it is larger than the sum of its proper divisors (1617438790).

2021000210 is a wasteful number, since it uses less digits than its factorization.

2021000210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35485.

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

The square root of 2021000210 is about 44955.5359216193. The cubic root of 2021000210 is about 1264.3154727343.

Adding to 2021000210 its reverse (120001202), we get a palindrome (2141001412).

The spelling of 2021000210 in words is "two billion, twenty-one million, two hundred ten", and thus it is an aban number.