1227223055601 has 45 divisors (see below), whose sum is σ = 1856864805609. Its totient is φ = 807746452344.

The previous prime is 1227223055587. The next prime is 1227223055647. The reversal of 1227223055601 is 1065503227221.

The square root of 1227223055601 is 1107801.

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

1227223055601 is a `hidden beast` number, since 1 + 2 + 2 + 72 + 2 + 30 + 556 + 0 + 1 = 666.

It is not a de Polignac number, because 1227223055601 - 2¹⁹ = 1227222531313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1227223055671) 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 44 ways as a sum of consecutive naturals, for example, 827526606 + ... + 827528088.

Almost surely, 2^{1227223055601} is an apocalyptic number.

1227223055601 is the 1107801-st square number.

1227223055601 is the 553901-st centered octagonal number.

It is an amenable number.

1227223055601 is a deficient number, since it is larger than the sum of its proper divisors (629641750008).

1227223055601 is an frugal number, since it uses more digits than its factorization.

1227223055601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3144 (or 1569 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

Multiplying 1227223055601 by its sum of digits (36), we get a square (44180030001636 = 6646806²).

The spelling of 1227223055601 in words is "one trillion, two hundred twenty-seven billion, two hundred twenty-three million, fifty-five thousand, six hundred one".