21220102200102 has 16 divisors (see below), whose sum is σ = 45704835508080. Its totient is φ = 6529262215392.

The previous prime is 21220102200043. The next prime is 21220102200127. The reversal of 21220102200102 is 20100220102212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136026296077 + ... + 136026296232.

It is an arithmetic number, because the mean of its divisors is an integer number (2856552219255).

Almost surely, 2^{21220102200102} is an apocalyptic number.

21220102200102 is an abundant number, since it is smaller than the sum of its proper divisors (24484733307978).

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

21220102200102 is a wasteful number, since it uses less digits than its factorization.

21220102200102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272052592327.

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

Adding to 21220102200102 its reverse (20100220102212), we get a palindrome (41320322302314).

The spelling of 21220102200102 in words is "twenty-one trillion, two hundred twenty billion, one hundred two million, two hundred thousand, one hundred two".