21216363360602 has 8 divisors (see below), whose sum is σ = 31840229889300. Its totient is φ = 10602953397504.

The previous prime is 21216363360571. The next prime is 21216363360653. The reversal of 21216363360602 is 20606336361212.

It can be written as a sum of positive squares in 2 ways, for example, as 14146768365961 + 7069594994641 = 3761219^2 + 2658871^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 21216363360602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2614136327 + ... + 2614144442.

Almost surely, 2^{21216363360602} is an apocalyptic number.

21216363360602 is a deficient number, since it is larger than the sum of its proper divisors (10623866528698).

21216363360602 is a wasteful number, since it uses less digits than its factorization.

21216363360602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5228282800.

The product of its (nonzero) digits is 279936, while the sum is 41.

The spelling of 21216363360602 in words is "twenty-one trillion, two hundred sixteen billion, three hundred sixty-three million, three hundred sixty thousand, six hundred two".