21130221301 has 16 divisors (see below), whose sum is σ = 24450840064. Its totient is φ = 17885919744.

The previous prime is 21130221293. The next prime is 21130221311. The reversal of 21130221301 is 10312203112.

It is not a de Polignac number, because 21130221301 - 2³ = 21130221293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21130221311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 280771 + ... + 347983.

It is an arithmetic number, because the mean of its divisors is an integer number (1528177504).

Almost surely, 2^21130221301 is an apocalyptic number.

It is an amenable number.

21130221301 is a deficient number, since it is larger than the sum of its proper divisors (3320618763).

21130221301 is an equidigital number, since it uses as much as digits as its factorization.

21130221301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67780.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21130221301 its reverse (10312203112), we get a palindrome (31442424413).

The spelling of 21130221301 in words is "twenty-one billion, one hundred thirty million, two hundred twenty-one thousand, three hundred one".