21301061246 has 8 divisors (see below), whose sum is σ = 32815148520. Its totient is φ = 10362678408.

The previous prime is 21301061227. The next prime is 21301061261. The reversal of 21301061246 is 64216010312.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143926016 + ... + 143926163.

It is an arithmetic number, because the mean of its divisors is an integer number (4101893565).

Almost surely, 2^21301061246 is an apocalyptic number.

21301061246 is a deficient number, since it is larger than the sum of its proper divisors (11514087274).

21301061246 is a wasteful number, since it uses less digits than its factorization.

21301061246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287852218.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 21301061246 its reverse (64216010312), we get a palindrome (85517071558).

The spelling of 21301061246 in words is "twenty-one billion, three hundred one million, sixty-one thousand, two hundred forty-six".