21202101220002 has 16 divisors (see below), whose sum is σ = 44898567289632. Its totient is φ = 6651639598400.

The previous prime is 21202101219997. The next prime is 21202101220007. The reversal of 21202101220002 is 20002210120212.

It is an interprime number because it is at equal distance from previous prime (21202101219997) and next prime (21202101220007).

It is a super-2 number, since 2×21202101220002² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21202101220007) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 103931868624 + ... + 103931868827.

It is an arithmetic number, because the mean of its divisors is an integer number (2806160455602).

Almost surely, 2^{21202101220002} is an apocalyptic number.

21202101220002 is an abundant number, since it is smaller than the sum of its proper divisors (23696466069630).

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

21202101220002 is a wasteful number, since it uses less digits than its factorization.

21202101220002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207863737473.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21202101220002 its reverse (20002210120212), we get a palindrome (41204311340214).

The spelling of 21202101220002 in words is "twenty-one trillion, two hundred two billion, one hundred one million, two hundred twenty thousand, two".