21323013101 has 8 divisors (see below), whose sum is σ = 22965177984. Its totient is φ = 19681124400.

The previous prime is 21323013097. The next prime is 21323013133. The reversal of 21323013101 is 10131032312.

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

It is a cyclic number.

It is not a de Polignac number, because 21323013101 - 2² = 21323013097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21323013101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21323013001) 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, 108176 + ... + 233126.

It is an arithmetic number, because the mean of its divisors is an integer number (2870647248).

Almost surely, 2^21323013101 is an apocalyptic number.

It is an amenable number.

21323013101 is a deficient number, since it is larger than the sum of its proper divisors (1642164883).

21323013101 is a wasteful number, since it uses less digits than its factorization.

21323013101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138091.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21323013101 its reverse (10131032312), we get a palindrome (31454045413).

The spelling of 21323013101 in words is "twenty-one billion, three hundred twenty-three million, thirteen thousand, one hundred one".