1220444045554 has 8 divisors (see below), whose sum is σ = 1832131777500. Its totient is φ = 609733453056.

The previous prime is 1220444045543. The next prime is 1220444045609. The reversal of 1220444045554 is 4555404440221.

It can be written as a sum of positive squares in 2 ways, for example, as 1215896566329 + 4547479225 = 1102677^2 + 67435^2 .

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

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, 244281739 + ... + 244286734.

Almost surely, 2^{1220444045554} is an apocalyptic number.

1220444045554 is a deficient number, since it is larger than the sum of its proper divisors (611687731946).

1220444045554 is a wasteful number, since it uses less digits than its factorization.

1220444045554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488569724.

The product of its (nonzero) digits is 512000, while the sum is 40.

Adding to 1220444045554 its reverse (4555404440221), we get a palindrome (5775848485775).

The spelling of 1220444045554 in words is "one trillion, two hundred twenty billion, four hundred forty-four million, forty-five thousand, five hundred fifty-four".