21300110121 has 16 divisors (see below), whose sum is σ = 29502603648. Its totient is φ = 13658601600.

The previous prime is 21300110119. The next prime is 21300110123. The reversal of 21300110121 is 12101100312.

It is an interprime number because it is at equal distance from previous prime (21300110119) and next prime (21300110123).

It is not a de Polignac number, because 21300110121 - 2¹ = 21300110119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21300110097 and 21300110106.

It is not an unprimeable number, because it can be changed into a prime (21300110123) 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 15 ways as a sum of consecutive naturals, for example, 1210786 + ... + 1228251.

It is an arithmetic number, because the mean of its divisors is an integer number (1843912728).

Almost surely, 2^21300110121 is an apocalyptic number.

It is an amenable number.

21300110121 is a deficient number, since it is larger than the sum of its proper divisors (8202493527).

21300110121 is a wasteful number, since it uses less digits than its factorization.

21300110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2439152.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 21300110121 its reverse (12101100312), we get a palindrome (33401210433).

The spelling of 21300110121 in words is "twenty-one billion, three hundred million, one hundred ten thousand, one hundred twenty-one".