1220410421455 has 16 divisors (see below), whose sum is σ = 1541684718720. Its totient is φ = 924874439328.

The previous prime is 1220410421393. The next prime is 1220410421471. The reversal of 1220410421455 is 5541240140221.

It is a cyclic number.

It is not a de Polignac number, because 1220410421455 - 2¹⁹ = 1220409897167 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 840784 + ... + 1774186.

It is an arithmetic number, because the mean of its divisors is an integer number (96355294920).

Almost surely, 2^{1220410421455} is an apocalyptic number.

1220410421455 is a deficient number, since it is larger than the sum of its proper divisors (321274297265).

1220410421455 is a wasteful number, since it uses less digits than its factorization.

1220410421455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947190.

The product of its (nonzero) digits is 12800, while the sum is 31.

Adding to 1220410421455 its reverse (5541240140221), we get a palindrome (6761650561676).

The spelling of 1220410421455 in words is "one trillion, two hundred twenty billion, four hundred ten million, four hundred twenty-one thousand, four hundred fifty-five".