21113131103102 has 16 divisors (see below), whose sum is σ = 33062612412960. Its totient is φ = 10092703977312.

The previous prime is 21113131103047. The next prime is 21113131103107. The reversal of 21113131103102 is 20130113131112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113131103107) 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, 110823413 + ... + 111013760.

It is an arithmetic number, because the mean of its divisors is an integer number (2066413275810).

Almost surely, 2^{21113131103102} is an apocalyptic number.

21113131103102 is a deficient number, since it is larger than the sum of its proper divisors (11949481309858).

21113131103102 is a wasteful number, since it uses less digits than its factorization.

21113131103102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221839267.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 21113131103102 its reverse (20130113131112), we get a palindrome (41243244234214).

The spelling of 21113131103102 in words is "twenty-one trillion, one hundred thirteen billion, one hundred thirty-one million, one hundred three thousand, one hundred two".