21030120301 has 4 divisors (see below), whose sum is σ = 21031753600. Its totient is φ = 21028487004.

The previous prime is 21030120289. The next prime is 21030120329. The reversal of 21030120301 is 10302103012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21030120301 - 2¹¹ = 21030118253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21030120361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 797181 + ... + 823138.

It is an arithmetic number, because the mean of its divisors is an integer number (5257938400).

Almost surely, 2^21030120301 is an apocalyptic number.

It is an amenable number.

21030120301 is a deficient number, since it is larger than the sum of its proper divisors (1633299).

21030120301 is a wasteful number, since it uses less digits than its factorization.

21030120301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1633298.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 21030120301 its reverse (10302103012), we get a palindrome (31332223313).

The spelling of 21030120301 in words is "twenty-one billion, thirty million, one hundred twenty thousand, three hundred one".