210020021002 has 16 divisors (see below), whose sum is σ = 343702230624. Its totient is φ = 95454450000.

The previous prime is 210020020979. The next prime is 210020021009. The reversal of 210020021002 is 200120020012.

210020021002 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 210020021002.

It is not an unprimeable number, because it can be changed into a prime (210020021009) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 223524 + ... + 685567.

It is an arithmetic number, because the mean of its divisors is an integer number (21481389414).

Almost surely, 2^210020021002 is an apocalyptic number.

210020021002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

210020021002 is a deficient number, since it is larger than the sum of its proper divisors (133682209622).

210020021002 is a wasteful number, since it uses less digits than its factorization.

210020021002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919605.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 210020021002 its reverse (200120020012), we get a palindrome (410140041014).

It can be divided in two parts, 2100200 and 21002, that multiplied together give a square (44108400400 = 210020²).

The spelling of 210020021002 in words is "two hundred ten billion, twenty million, twenty-one thousand, two".