21012230301 has 4 divisors (see below), whose sum is σ = 28016307072. Its totient is φ = 14008153532.

The previous prime is 21012230297. The next prime is 21012230341. The reversal of 21012230301 is 10303221012.

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 21012230301 - 2² = 21012230297 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21012230341) 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 3 ways as a sum of consecutive naturals, for example, 3502038381 + ... + 3502038386.

It is an arithmetic number, because the mean of its divisors is an integer number (7004076768).

Almost surely, 2^21012230301 is an apocalyptic number.

It is an amenable number.

21012230301 is a deficient number, since it is larger than the sum of its proper divisors (7004076771).

21012230301 is an equidigital number, since it uses as much as digits as its factorization.

21012230301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7004076770.

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

Adding to 21012230301 its reverse (10303221012), we get a palindrome (31315451313).

The spelling of 21012230301 in words is "twenty-one billion, twelve million, two hundred thirty thousand, three hundred one".