21220100212102 has 8 divisors (see below), whose sum is σ = 34723800347112. Its totient is φ = 9645500096400.

The previous prime is 21220100212061. The next prime is 21220100212121. The reversal of 21220100212102 is 20121200102212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 482275004799 + ... + 482275004842.

It is an arithmetic number, because the mean of its divisors is an integer number (4340475043389).

Almost surely, 2^{21220100212102} is an apocalyptic number.

21220100212102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21220100212102 is a deficient number, since it is larger than the sum of its proper divisors (13503700135010).

21220100212102 is a wasteful number, since it uses less digits than its factorization.

21220100212102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964550009654.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21220100212102 its reverse (20121200102212), we get a palindrome (41341300314314).

The spelling of 21220100212102 in words is "twenty-one trillion, two hundred twenty billion, one hundred million, two hundred twelve thousand, one hundred two".