21200110202102 has 64 divisors (see below), whose sum is σ = 36377582915520. Its totient is φ = 9179470761984.

The previous prime is 21200110202081. The next prime is 21200110202107. The reversal of 21200110202102 is 20120201100212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21200110202107) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 315355049 + ... + 315422267.

It is an arithmetic number, because the mean of its divisors is an integer number (568399733055).

Almost surely, 2^{21200110202102} is an apocalyptic number.

21200110202102 is a deficient number, since it is larger than the sum of its proper divisors (15177472713418).

21200110202102 is a wasteful number, since it uses less digits than its factorization.

21200110202102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69537.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21200110202102 its reverse (20120201100212), we get a palindrome (41320311302314).

The spelling of 21200110202102 in words is "twenty-one trillion, two hundred billion, one hundred ten million, two hundred two thousand, one hundred two".