1221574740481 has 8 divisors (see below), whose sum is σ = 1222825011200. Its totient is φ = 1220324933520.

The previous prime is 1221574740479. The next prime is 1221574740493. The reversal of 1221574740481 is 1840474751221.

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 1221574740481 - 2¹ = 1221574740479 is a prime.

It is a super-2 number, since 2×1221574740481² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1221574740461) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5282911 + ... + 5509291.

It is an arithmetic number, because the mean of its divisors is an integer number (152853126400).

Almost surely, 2^{1221574740481} is an apocalyptic number.

It is an amenable number.

1221574740481 is a deficient number, since it is larger than the sum of its proper divisors (1250270719).

1221574740481 is a wasteful number, since it uses less digits than its factorization.

1221574740481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231879.

The product of its (nonzero) digits is 501760, while the sum is 46.

The spelling of 1221574740481 in words is "one trillion, two hundred twenty-one billion, five hundred seventy-four million, seven hundred forty thousand, four hundred eighty-one".