1220221001170 has 32 divisors (see below), whose sum is σ = 2236131878400. Its totient is φ = 479285327040.

The previous prime is 1220221001147. The next prime is 1220221001171. The reversal of 1220221001170 is 711001220221.

It is not an unprimeable number, because it can be changed into a prime (1220221001171) 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, 1304362 + ... + 2035141.

It is an arithmetic number, because the mean of its divisors is an integer number (69879121200).

Almost surely, 2^{1220221001170} is an apocalyptic number.

1220221001170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220221001170 is a deficient number, since it is larger than the sum of its proper divisors (1015910877230).

1220221001170 is a wasteful number, since it uses less digits than its factorization.

1220221001170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3340170.

The product of its (nonzero) digits is 112, while the sum is 19.

Adding to 1220221001170 its reverse (711001220221), we get a palindrome (1931222221391).

The spelling of 1220221001170 in words is "one trillion, two hundred twenty billion, two hundred twenty-one million, one thousand, one hundred seventy".