21213303101 has 8 divisors (see below), whose sum is σ = 21360484608. Its totient is φ = 21066210000.

The previous prime is 21213303091. The next prime is 21213303113. The reversal of 21213303101 is 10130331212.

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 21213303101 - 2⁶ = 21213303037 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 21213303101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21213303151) 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, 502316 + ... + 542906.

It is an arithmetic number, because the mean of its divisors is an integer number (2670060576).

Almost surely, 2^21213303101 is an apocalyptic number.

It is an amenable number.

21213303101 is a deficient number, since it is larger than the sum of its proper divisors (147181507).

21213303101 is a wasteful number, since it uses less digits than its factorization.

21213303101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44203.

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

Adding to 21213303101 its reverse (10130331212), we get a palindrome (31343634313).

The spelling of 21213303101 in words is "twenty-one billion, two hundred thirteen million, three hundred three thousand, one hundred one".