21313113100002 has 96 divisors (see below), whose sum is σ = 47582223951600. Its totient is φ = 6891736190976.

The previous prime is 21313113099997. The next prime is 21313113100031. The reversal of 21313113100002 is 20000131131312.

It can be written as a sum of positive squares in 8 ways, for example, as 15514846554321 + 5798266545681 = 3938889^2 + 2407959^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 43849324 + ... + 44332712.

Almost surely, 2^{21313113100002} is an apocalyptic number.

21313113100002 is an abundant number, since it is smaller than the sum of its proper divisors (26269110851598).

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

21313113100002 is a wasteful number, since it uses less digits than its factorization.

21313113100002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483972 (or 483969 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 21313113100002 its reverse (20000131131312), we get a palindrome (41313244231314).

The spelling of 21313113100002 in words is "twenty-one trillion, three hundred thirteen billion, one hundred thirteen million, one hundred thousand, two".