1220120654 has 8 divisors (see below), whose sum is σ = 1893290760. Its totient is φ = 589023736.

The previous prime is 1220120653. The next prime is 1220120659. The reversal of 1220120654 is 4560210221.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220120653) 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 3 ways as a sum of consecutive naturals, for example, 10518224 + ... + 10518339.

It is an arithmetic number, because the mean of its divisors is an integer number (236661345).

Almost surely, 2^1220120654 is an apocalyptic number.

1220120654 is a deficient number, since it is larger than the sum of its proper divisors (673170106).

1220120654 is a wasteful number, since it uses less digits than its factorization.

1220120654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21036594.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1220120654 is about 34930.2255074312. The cubic root of 1220120654 is about 1068.5649536834.

Adding to 1220120654 its reverse (4560210221), we get a palindrome (5780330875).

The spelling of 1220120654 in words is "one billion, two hundred twenty million, one hundred twenty thousand, six hundred fifty-four".