1222057155571 has 16 divisors (see below), whose sum is σ = 1399134437568. Its totient is φ = 1045604736000.

The previous prime is 1222057155547. The next prime is 1222057155581. The reversal of 1222057155571 is 1755517502221.

It is a cyclic number.

It is not a de Polignac number, because 1222057155571 - 2¹¹ = 1222057153523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1222057155581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50947401 + ... + 50971381.

It is an arithmetic number, because the mean of its divisors is an integer number (87445902348).

Almost surely, 2^{1222057155571} is an apocalyptic number.

1222057155571 is a deficient number, since it is larger than the sum of its proper divisors (177077281997).

1222057155571 is a wasteful number, since it uses less digits than its factorization.

1222057155571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36702.

The product of its (nonzero) digits is 245000, while the sum is 43.

The spelling of 1222057155571 in words is "one trillion, two hundred twenty-two billion, fifty-seven million, one hundred fifty-five thousand, five hundred seventy-one".