10221420615455 has 8 divisors (see below), whose sum is σ = 14017948272672. Its totient is φ = 7008974136288.

The previous prime is 10221420615409. The next prime is 10221420615457. The reversal of 10221420615455 is 55451602412201.

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

It is a cyclic number.

It is not a de Polignac number, because 10221420615455 - 2²⁰ = 10221419566879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221420615457) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 146020294472 + ... + 146020294541.

It is an arithmetic number, because the mean of its divisors is an integer number (1752243534084).

Almost surely, 2^{10221420615455} is an apocalyptic number.

10221420615455 is a deficient number, since it is larger than the sum of its proper divisors (3796527657217).

10221420615455 is an equidigital number, since it uses as much as digits as its factorization.

10221420615455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292040589025.

The product of its (nonzero) digits is 96000, while the sum is 38.

The spelling of 10221420615455 in words is "ten trillion, two hundred twenty-one billion, four hundred twenty million, six hundred fifteen thousand, four hundred fifty-five".