21301035126 has 32 divisors (see below), whose sum is σ = 50804955648. Its totient is φ = 5821400640.

The previous prime is 21301035121. The next prime is 21301035167. The reversal of 21301035126 is 62153010312.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21301035096 and 21301035105.

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 15 ways as a sum of consecutive naturals, for example, 11024415 + ... + 11026346.

It is an arithmetic number, because the mean of its divisors is an integer number (1587654864).

Almost surely, 2^21301035126 is an apocalyptic number.

21301035126 is an abundant number, since it is smaller than the sum of its proper divisors (29503920522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21301035126 is a wasteful number, since it uses less digits than its factorization.

21301035126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22050796.

The product of its (nonzero) digits is 1080, while the sum is 24.

Adding to 21301035126 its reverse (62153010312), we get a palindrome (83454045438).

The spelling of 21301035126 in words is "twenty-one billion, three hundred one million, thirty-five thousand, one hundred twenty-six".