21300112102 has 4 divisors (see below), whose sum is σ = 31950168156. Its totient is φ = 10650056050.

The previous prime is 21300112087. The next prime is 21300112103. The reversal of 21300112102 is 20121100312.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21300112103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5325028024 + ... + 5325028027.

It is an arithmetic number, because the mean of its divisors is an integer number (7987542039).

Almost surely, 2^21300112102 is an apocalyptic number.

21300112102 is a deficient number, since it is larger than the sum of its proper divisors (10650056054).

21300112102 is a wasteful number, since it uses less digits than its factorization.

21300112102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10650056053.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 21300112102 its reverse (20121100312), we get a palindrome (41421212414).

The spelling of 21300112102 in words is "twenty-one billion, three hundred million, one hundred twelve thousand, one hundred two".