21320310000002 has 8 divisors (see below), whose sum is σ = 34440500769276. Its totient is φ = 9840143076912.

The previous prime is 21320309999959. The next prime is 21320310000007. The reversal of 21320310000002 is 20000001302312.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21320004134881 + 305865121 = 4617359^2 + 17489^2 .

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

It is not an unprimeable number, because it can be changed into a prime (21320310000007) 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, 410005961513 + ... + 410005961564.

Almost surely, 2^{21320310000002} is an apocalyptic number.

21320310000002 is a deficient number, since it is larger than the sum of its proper divisors (13120190769274).

21320310000002 is a wasteful number, since it uses less digits than its factorization.

21320310000002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820011923092.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 21320310000002 its reverse (20000001302312), we get a palindrome (41320311302314).

The spelling of 21320310000002 in words is "twenty-one trillion, three hundred twenty billion, three hundred ten million, two", and thus it is an aban number.