1220068871 has 16 divisors (see below), whose sum is σ = 1417331520. Its totient is φ = 1028670720.

The previous prime is 1220068867. The next prime is 1220068873. The reversal of 1220068871 is 1788600221.

It is not a de Polignac number, because 1220068871 - 2² = 1220068867 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220068873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117761 + ... + 127701.

It is an arithmetic number, because the mean of its divisors is an integer number (88583220).

Almost surely, 2^1220068871 is an apocalyptic number.

1220068871 is a deficient number, since it is larger than the sum of its proper divisors (197262649).

1220068871 is an equidigital number, since it uses as much as digits as its factorization.

1220068871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10234.

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 1220068871 is about 34929.4842647297. The cubic root of 1220068871 is about 1068.5498365222.

The spelling of 1220068871 in words is "one billion, two hundred twenty million, sixty-eight thousand, eight hundred seventy-one".