21203020301 has 8 divisors (see below), whose sum is σ = 21282688224. Its totient is φ = 21123402640.

The previous prime is 21203020297. The next prime is 21203020339. The reversal of 21203020301 is 10302030212.

It is a happy number.

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 21203020301 - 2² = 21203020297 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 (21203020901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 976970 + ... + 998436.

It is an arithmetic number, because the mean of its divisors is an integer number (2660336028).

Almost surely, 2^21203020301 is an apocalyptic number.

It is an amenable number.

21203020301 is a deficient number, since it is larger than the sum of its proper divisors (79667923).

21203020301 is a wasteful number, since it uses less digits than its factorization.

21203020301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25131.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 21203020301 its reverse (10302030212), we get a palindrome (31505050513).

The spelling of 21203020301 in words is "twenty-one billion, two hundred three million, twenty thousand, three hundred one".