1220421302344 has 8 divisors (see below), whose sum is σ = 2288289941910. Its totient is φ = 610210651168.

The previous prime is 1220421302339. The next prime is 1220421302381. The reversal of 1220421302344 is 4432031240221.

It can be written as a sum of positive squares in only one way, i.e., 771695485444 + 448725816900 = 878462^2 + 669870^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76276331389 + ... + 76276331404.

Almost surely, 2^{1220421302344} is an apocalyptic number.

It is an amenable number.

1220421302344 is a deficient number, since it is larger than the sum of its proper divisors (1067868639566).

1220421302344 is a wasteful number, since it uses less digits than its factorization.

1220421302344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152552662799 (or 152552662795 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 1220421302344 its reverse (4432031240221), we get a palindrome (5652452542565).

The spelling of 1220421302344 in words is "one trillion, two hundred twenty billion, four hundred twenty-one million, three hundred two thousand, three hundred forty-four".