21113201100102 has 16 divisors (see below), whose sum is σ = 42244817579760. Its totient is φ = 7034664470112.

The previous prime is 21113201100091. The next prime is 21113201100107. The reversal of 21113201100102 is 20100110231112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113201100107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 767292577 + ... + 767320092.

It is an arithmetic number, because the mean of its divisors is an integer number (2640301098735).

Almost surely, 2^{21113201100102} is an apocalyptic number.

21113201100102 is an abundant number, since it is smaller than the sum of its proper divisors (21131616479658).

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

21113201100102 is a wasteful number, since it uses less digits than its factorization.

21113201100102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1534614967.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 21113201100102 its reverse (20100110231112), we get a palindrome (41213311331214).

The spelling of 21113201100102 in words is "twenty-one trillion, one hundred thirteen billion, two hundred one million, one hundred thousand, one hundred two".