21002112301 has 16 divisors (see below), whose sum is σ = 21933066240. Its totient is φ = 20085468480.

The previous prime is 21002112277. The next prime is 21002112343. The reversal of 21002112301 is 10321120012.

It is a cyclic number.

It is not a de Polignac number, because 21002112301 - 2¹¹ = 21002110253 is a prime.

It is a super-2 number, since 2×21002112301² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002112371) 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, 2430150 + ... + 2438776.

It is an arithmetic number, because the mean of its divisors is an integer number (1370816640).

Almost surely, 2^21002112301 is an apocalyptic number.

It is an amenable number.

21002112301 is a deficient number, since it is larger than the sum of its proper divisors (930953939).

21002112301 is a wasteful number, since it uses less digits than its factorization.

21002112301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9444.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 21002112301 its reverse (10321120012), we get a palindrome (31323232313).

The spelling of 21002112301 in words is "twenty-one billion, two million, one hundred twelve thousand, three hundred one".