1171270220 has 24 divisors (see below), whose sum is σ = 2472036000. Its totient is φ = 466152192.

The previous prime is 1171270201. The next prime is 1171270273. The reversal of 1171270220 is 220721711.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143165 + ... + 151124.

It is an arithmetic number, because the mean of its divisors is an integer number (103001500).

Almost surely, 2^1171270220 is an apocalyptic number.

1171270220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1171270220 is an abundant number, since it is smaller than the sum of its proper divisors (1300765780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1171270220 is a wasteful number, since it uses less digits than its factorization.

1171270220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294497 (or 294495 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 23.

The square root of 1171270220 is about 34223.8253268100. The cubic root of 1171270220 is about 1054.1094346560.

Adding to 1171270220 its reverse (220721711), we get a palindrome (1391991931).

The spelling of 1171270220 in words is "one billion, one hundred seventy-one million, two hundred seventy thousand, two hundred twenty".