21363425310001 has 4 divisors (see below), whose sum is σ = 21369391084404. Its totient is φ = 21357459535600.

The previous prime is 21363425309999. The next prime is 21363425310041. The reversal of 21363425310001 is 10001352436312.

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

It can be written as a sum of positive squares in 2 ways, for example, as 19150995154225 + 2212430155776 = 4376185^2 + 1487424^2 .

It is a cyclic number.

It is not a de Polignac number, because 21363425310001 - 2¹ = 21363425309999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21363425310041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2982881830 + ... + 2982888991.

It is an arithmetic number, because the mean of its divisors is an integer number (5342347771101).

Almost surely, 2^{21363425310001} is an apocalyptic number.

It is an amenable number.

21363425310001 is a deficient number, since it is larger than the sum of its proper divisors (5965774403).

21363425310001 is an equidigital number, since it uses as much as digits as its factorization.

21363425310001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5965774402.

The product of its (nonzero) digits is 12960, while the sum is 31.

Adding to 21363425310001 its reverse (10001352436312), we get a palindrome (31364777746313).

The spelling of 21363425310001 in words is "twenty-one trillion, three hundred sixty-three billion, four hundred twenty-five million, three hundred ten thousand, one".