1220121174 has 8 divisors (see below), whose sum is σ = 2440242360. Its totient is φ = 406707056.

The previous prime is 1220121169. The next prime is 1220121247. The reversal of 1220121174 is 4711210221.

It is a sphenic number, since it is the product of 3 distinct primes.

1220121174 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 1220121174.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101676759 + ... + 101676770.

It is an arithmetic number, because the mean of its divisors is an integer number (305030295).

Almost surely, 2^1220121174 is an apocalyptic number.

1220121174 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1220121174 is a wasteful number, since it uses less digits than its factorization.

1220121174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203353534.

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 1220121174 is about 34930.2329508407. The cubic root of 1220121174 is about 1068.5651054863.

Adding to 1220121174 its reverse (4711210221), we get a palindrome (5931331395).

The spelling of 1220121174 in words is "one billion, two hundred twenty million, one hundred twenty-one thousand, one hundred seventy-four".