1220412673727 has 16 divisors (see below), whose sum is σ = 1323907777920. Its totient is φ = 1118293441632.

The previous prime is 1220412673703. The next prime is 1220412673759. The reversal of 1220412673727 is 7273762140221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1220412673727 - 2⁸ = 1220412673471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220412673027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16593128 + ... + 16666514.

It is an arithmetic number, because the mean of its divisors is an integer number (82744236120).

Almost surely, 2^{1220412673727} is an apocalyptic number.

1220412673727 is a deficient number, since it is larger than the sum of its proper divisors (103495104193).

1220412673727 is a wasteful number, since it uses less digits than its factorization.

1220412673727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82742.

The product of its (nonzero) digits is 395136, while the sum is 44.

The spelling of 1220412673727 in words is "one trillion, two hundred twenty billion, four hundred twelve million, six hundred seventy-three thousand, seven hundred twenty-seven".