1222175140 has 36 divisors (see below), whose sum is σ = 2605637916. Its totient is φ = 481538112.

The previous prime is 1222175137. The next prime is 1222175183. The reversal of 1222175140 is 415712221.

It can be written as a sum of positive squares in 2 ways, for example, as 126697536 + 1095477604 = 11256^2 + 33098^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82974 + ... + 96586.

It is an arithmetic number, because the mean of its divisors is an integer number (72378831).

Almost surely, 2^1222175140 is an apocalyptic number.

1222175140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222175140 is an abundant number, since it is smaller than the sum of its proper divisors (1383462776).

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

1222175140 is a wasteful number, since it uses less digits than its factorization.

1222175140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13756 (or 13687 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 1222175140 is about 34959.6215654575. The cubic root of 1222175140 is about 1069.1643809274.

Adding to 1222175140 its reverse (415712221), we get a palindrome (1637887361).

The spelling of 1222175140 in words is "one billion, two hundred twenty-two million, one hundred seventy-five thousand, one hundred forty".