21364225130246 has 4 divisors (see below), whose sum is σ = 32046337695372. Its totient is φ = 10682112565122.

The previous prime is 21364225130221. The next prime is 21364225130341. The reversal of 21364225130246 is 64203152246312.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5341056282560 + ... + 5341056282563.

It is an arithmetic number, because the mean of its divisors is an integer number (8011584423843).

Almost surely, 2^{21364225130246} is an apocalyptic number.

21364225130246 is a deficient number, since it is larger than the sum of its proper divisors (10682112565126).

21364225130246 is a wasteful number, since it uses less digits than its factorization.

21364225130246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10682112565125.

The product of its (nonzero) digits is 414720, while the sum is 41.

Adding to 21364225130246 its reverse (64203152246312), we get a palindrome (85567377376558).

The spelling of 21364225130246 in words is "twenty-one trillion, three hundred sixty-four billion, two hundred twenty-five million, one hundred thirty thousand, two hundred forty-six".