21130021201 has 8 divisors (see below), whose sum is σ = 22305143520. Its totient is φ = 19961200512.

The previous prime is 21130021183. The next prime is 21130021219. The reversal of 21130021201 is 10212003112.

It is an interprime number because it is at equal distance from previous prime (21130021183) and next prime (21130021219).

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 21130021201 - 2⁹ = 21130020689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21130021001) 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, 1568515 + ... + 1581928.

It is an arithmetic number, because the mean of its divisors is an integer number (2788142940).

Almost surely, 2^21130021201 is an apocalyptic number.

It is an amenable number.

21130021201 is a deficient number, since it is larger than the sum of its proper divisors (1175122319).

21130021201 is a wasteful number, since it uses less digits than its factorization.

21130021201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3150815.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 21130021201 its reverse (10212003112), we get a palindrome (31342024313).

The spelling of 21130021201 in words is "twenty-one billion, one hundred thirty million, twenty-one thousand, two hundred one".