21203320101 has 8 divisors (see below), whose sum is σ = 29245958880. Its totient is φ = 13648114032.

The previous prime is 21203320093. The next prime is 21203320111. The reversal of 21203320101 is 10102330212.

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

It is not a de Polignac number, because 21203320101 - 2³ = 21203320093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21203320111) 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, 121858075 + ... + 121858248.

It is an arithmetic number, because the mean of its divisors is an integer number (3655744860).

Almost surely, 2^21203320101 is an apocalyptic number.

It is an amenable number.

21203320101 is a deficient number, since it is larger than the sum of its proper divisors (8042638779).

21203320101 is a wasteful number, since it uses less digits than its factorization.

21203320101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243716355.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21203320101 its reverse (10102330212), we get a palindrome (31305650313).

The spelling of 21203320101 in words is "twenty-one billion, two hundred three million, three hundred twenty thousand, one hundred one".