1227418036321 has 9 divisors (see below), whose sum is σ = 1230043794129. Its totient is φ = 1224797878836.

The previous prime is 1227418036309. The next prime is 1227418036331. The reversal of 1227418036321 is 1236308147221.

The square root of 1227418036321 is 1107889.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 1227418036321 - 2⁵ = 1227418036289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1227418036331) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 712371766 + ... + 712373488.

It is an arithmetic number, because the mean of its divisors is an integer number (136671532681).

Almost surely, 2^{1227418036321} is an apocalyptic number.

1227418036321 is the 1107889-th square number.

1227418036321 is the 553945-th centered octagonal number.

It is an amenable number.

1227418036321 is a deficient number, since it is larger than the sum of its proper divisors (2625757808).

1227418036321 is an frugal number, since it uses more digits than its factorization.

1227418036321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4732 (or 2366 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 1227418036321 in words is "one trillion, two hundred twenty-seven billion, four hundred eighteen million, thirty-six thousand, three hundred twenty-one".