21202002022102 has 16 divisors (see below), whose sum is σ = 36202627959552. Its totient is φ = 9218261748520.

The previous prime is 21202002022063. The next prime is 21202002022121. The reversal of 21202002022102 is 20122020020212.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 20950594378 + ... + 20950595389.

It is an arithmetic number, because the mean of its divisors is an integer number (2262664247472).

Almost surely, 2^{21202002022102} is an apocalyptic number.

21202002022102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21202002022102 is a deficient number, since it is larger than the sum of its proper divisors (15000625937450).

21202002022102 is a wasteful number, since it uses less digits than its factorization.

21202002022102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41901189803.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 21202002022102 its reverse (20122020020212), we get a palindrome (41324022042314).

The spelling of 21202002022102 in words is "twenty-one trillion, two hundred two billion, two million, twenty-two thousand, one hundred two".