21010002020202 has 32 divisors (see below), whose sum is σ = 45267709717440. Its totient is φ = 6462416338560.

The previous prime is 21010002020173. The next prime is 21010002020251. The reversal of 21010002020202 is 20202020001012.

It is a super-2 number, since 2×21010002020202² (a number of 27 digits) contains 22 as substring.

21010002020202 is a modest number, since divided by 2020202 gives 210100 as remainder.

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 15 ways as a sum of consecutive naturals, for example, 45595699 + ... + 46054182.

It is an arithmetic number, because the mean of its divisors is an integer number (1414615928670).

Almost surely, 2^{21010002020202} is an apocalyptic number.

21010002020202 is an abundant number, since it is smaller than the sum of its proper divisors (24257707697238).

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

21010002020202 is a wasteful number, since it uses less digits than its factorization.

21010002020202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91652838.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 21010002020202 its reverse (20202020001012), we get a palindrome (41212022021214).

The spelling of 21010002020202 in words is "twenty-one trillion, ten billion, two million, twenty thousand, two hundred two".