21321100112102 has 8 divisors (see below), whose sum is σ = 36550457335056. Its totient is φ = 9137614333752.

The previous prime is 21321100112093. The next prime is 21321100112107. The reversal of 21321100112102 is 20121100112312.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21321100112107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 761467861133 + ... + 761467861160.

It is an arithmetic number, because the mean of its divisors is an integer number (4568807166882).

Almost surely, 2^{21321100112102} is an apocalyptic number.

21321100112102 is a deficient number, since it is larger than the sum of its proper divisors (15229357222954).

21321100112102 is a wasteful number, since it uses less digits than its factorization.

21321100112102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1522935722302.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 21321100112102 its reverse (20121100112312), we get a palindrome (41442200224414).

The spelling of 21321100112102 in words is "twenty-one trillion, three hundred twenty-one billion, one hundred million, one hundred twelve thousand, one hundred two".