1220443320542 has 8 divisors (see below), whose sum is σ = 1830671116056. Its totient is φ = 610219615192.

The previous prime is 1220443320479. The next prime is 1220443320589. The reversal of 1220443320542 is 2450233440221.

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

It is a junction number, because it is equal to n+sod(n) for n = 1220443320499 and 1220443320508.

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, 115748 + ... + 1566615.

It is an arithmetic number, because the mean of its divisors is an integer number (228833889507).

Almost surely, 2^{1220443320542} is an apocalyptic number.

1220443320542 is a deficient number, since it is larger than the sum of its proper divisors (610227795514).

1220443320542 is a wasteful number, since it uses less digits than its factorization.

1220443320542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2045082.

The product of its (nonzero) digits is 46080, while the sum is 32.

Adding to 1220443320542 its reverse (2450233440221), we get a palindrome (3670676760763).

The spelling of 1220443320542 in words is "one trillion, two hundred twenty billion, four hundred forty-three million, three hundred twenty thousand, five hundred forty-two".