21012301101 has 24 divisors (see below), whose sum is σ = 30832038720. Its totient is φ = 12719365120.

The previous prime is 21012301099. The next prime is 21012301127. The reversal of 21012301101 is 10110321012.

It is not a de Polignac number, because 21012301101 - 2¹ = 21012301099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21012301151) 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 23 ways as a sum of consecutive naturals, for example, 270061 + ... + 339053.

It is an arithmetic number, because the mean of its divisors is an integer number (1284668280).

Almost surely, 2^21012301101 is an apocalyptic number.

It is an amenable number.

21012301101 is a deficient number, since it is larger than the sum of its proper divisors (9819737619).

21012301101 is a wasteful number, since it uses less digits than its factorization.

21012301101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69857 (or 69846 counting only the distinct ones).

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

Adding to 21012301101 its reverse (10110321012), we get a palindrome (31122622113).

The spelling of 21012301101 in words is "twenty-one billion, twelve million, three hundred one thousand, one hundred one".