21301035127 has 8 divisors (see below), whose sum is σ = 21387240864. Its totient is φ = 21214869408.

The previous prime is 21301035121. The next prime is 21301035167. The reversal of 21301035127 is 72153010312.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21301035127 - 2¹⁹ = 21300510839 is a prime.

It is a super-2 number, since 2×21301035127² (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 (21301035121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1521853 + ... + 1535785.

It is an arithmetic number, because the mean of its divisors is an integer number (2673405108).

Almost surely, 2^21301035127 is an apocalyptic number.

21301035127 is a deficient number, since it is larger than the sum of its proper divisors (86205737).

21301035127 is a wasteful number, since it uses less digits than its factorization.

21301035127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20009.

The product of its (nonzero) digits is 1260, while the sum is 25.

Adding to 21301035127 its reverse (72153010312), we get a palindrome (93454045439).

The spelling of 21301035127 in words is "twenty-one billion, three hundred one million, thirty-five thousand, one hundred twenty-seven".