10021020021200 has 30 divisors (see below), whose sum is σ = 24075500601894. Its totient is φ = 4008408008320.

The previous prime is 10021020021179. The next prime is 10021020021211. The reversal of 10021020021200 is 212002012001.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1540041288256 + 8480978732944 = 1240984^2 + 2912212^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12526274627 + ... + 12526275426.

Almost surely, 2^{10021020021200} is an apocalyptic number.

10021020021200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10021020021200 is an abundant number, since it is smaller than the sum of its proper divisors (14054480580694).

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

10021020021200 is a wasteful number, since it uses less digits than its factorization.

10021020021200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25052550071 (or 25052550060 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 10021020021200 its reverse (212002012001), we get a palindrome (10233022033201).

The spelling of 10021020021200 in words is "ten trillion, twenty-one billion, twenty million, twenty-one thousand, two hundred".