21202030101 has 8 divisors (see below), whose sum is σ = 32307855424. Its totient is φ = 12115445760.

The previous prime is 21202030037. The next prime is 21202030111. The reversal of 21202030101 is 10103020212.

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

It is not a de Polignac number, because 21202030101 - 2⁶ = 21202030037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202030111) 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, 504810220 + ... + 504810261.

It is an arithmetic number, because the mean of its divisors is an integer number (4038481928).

Almost surely, 2^21202030101 is an apocalyptic number.

21202030101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21202030101 is a deficient number, since it is larger than the sum of its proper divisors (11105825323).

21202030101 is a wasteful number, since it uses less digits than its factorization.

21202030101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009620491.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 21202030101 its reverse (10103020212), we get a palindrome (31305050313).

The spelling of 21202030101 in words is "twenty-one billion, two hundred two million, thirty thousand, one hundred one".