21231101310113 has 8 divisors (see below), whose sum is σ = 21379916921088. Its totient is φ = 21082801525344.

The previous prime is 21231101310037. The next prime is 21231101310119. The reversal of 21231101310113 is 31101310113212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21231101310113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21231101310119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128873945 + ... + 129038582.

It is an arithmetic number, because the mean of its divisors is an integer number (2672489615136).

Almost surely, 2^{21231101310113} is an apocalyptic number.

It is an amenable number.

21231101310113 is a deficient number, since it is larger than the sum of its proper divisors (148815610975).

21231101310113 is a wasteful number, since it uses less digits than its factorization.

21231101310113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257913103.

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

Adding to 21231101310113 its reverse (31101310113212), we get a palindrome (52332411423325).

It can be divided in two parts, 212 and 31101310113, that multiplied together give a palindrome (6593477743956).

The spelling of 21231101310113 in words is "twenty-one trillion, two hundred thirty-one billion, one hundred one million, three hundred ten thousand, one hundred thirteen".