21312032020202 has 32 divisors (see below), whose sum is σ = 40120216510464. Its totient is φ = 8248399758000.

The previous prime is 21312032020193. The next prime is 21312032020217. The reversal of 21312032020202 is 20202023021312.

It is a happy number.

It is a super-2 number, since 2×21312032020202² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 458221178 + ... + 458267685.

It is an arithmetic number, because the mean of its divisors is an integer number (1253756765952).

Almost surely, 2^{21312032020202} is an apocalyptic number.

21312032020202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21312032020202 is a deficient number, since it is larger than the sum of its proper divisors (18808184490262).

21312032020202 is a wasteful number, since it uses less digits than its factorization.

21312032020202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916489034.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21312032020202 its reverse (20202023021312), we get a palindrome (41514055041514).

The spelling of 21312032020202 in words is "twenty-one trillion, three hundred twelve billion, thirty-two million, twenty thousand, two hundred two".