2021110021210 has 24 divisors (see below), whose sum is σ = 4231956902580. Its totient is φ = 692952007104.

The previous prime is 2021110021207. The next prime is 2021110021241. The reversal of 2021110021210 is 121200111202.

It can be written as a sum of positive squares in 2 ways, for example, as 1982427392169 + 38682629041 = 1407987^2 + 196679^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2062356675 + ... + 2062357654.

Almost surely, 2^{2021110021210} is an apocalyptic number.

2021110021210 is an abundant number, since it is smaller than the sum of its proper divisors (2210846881370).

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

2021110021210 is a wasteful number, since it uses less digits than its factorization.

2021110021210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4124714350 (or 4124714343 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2021110021210 its reverse (121200111202), we get a palindrome (2142310132412).

The spelling of 2021110021210 in words is "two trillion, twenty-one billion, one hundred ten million, twenty-one thousand, two hundred ten".