1220709161271 has 16 divisors (see below), whose sum is σ = 1632676948704. Its totient is φ = 811275024384.

The previous prime is 1220709161251. The next prime is 1220709161279. The reversal of 1220709161271 is 1721619070221.

It is not a de Polignac number, because 1220709161271 - 2⁶ = 1220709161207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220709161279) 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, 3693115 + ... + 4010051.

It is an arithmetic number, because the mean of its divisors is an integer number (102042309294).

Almost surely, 2^{1220709161271} is an apocalyptic number.

1220709161271 is a deficient number, since it is larger than the sum of its proper divisors (411967787433).

1220709161271 is a wasteful number, since it uses less digits than its factorization.

1220709161271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320930.

The product of its (nonzero) digits is 21168, while the sum is 39.

The spelling of 1220709161271 in words is "one trillion, two hundred twenty billion, seven hundred nine million, one hundred sixty-one thousand, two hundred seventy-one".