21220200102102 has 32 divisors (see below), whose sum is σ = 42597945498240. Its totient is φ = 7047150183360.

The previous prime is 21220200101987. The next prime is 21220200102131. The reversal of 21220200102102 is 20120100202212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10106349 + ... + 12024087.

It is an arithmetic number, because the mean of its divisors is an integer number (1331185796820).

Almost surely, 2^{21220200102102} is an apocalyptic number.

21220200102102 is an abundant number, since it is smaller than the sum of its proper divisors (21377745396138).

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

21220200102102 is a wasteful number, since it uses less digits than its factorization.

21220200102102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1924588.

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

Adding to 21220200102102 its reverse (20120100202212), we get a palindrome (41340300304314).

The spelling of 21220200102102 in words is "twenty-one trillion, two hundred twenty billion, two hundred million, one hundred two thousand, one hundred two".