1100220019978 has 8 divisors (see below), whose sum is σ = 1652551203168. Its totient is φ = 549369618924.

The previous prime is 1100220019973. The next prime is 1100220019993. The reversal of 1100220019978 is 8799100220011.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1100220019978.

It is not an unprimeable number, because it can be changed into a prime (1100220019973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 370193676 + ... + 370196647.

It is an arithmetic number, because the mean of its divisors is an integer number (206568900396).

Almost surely, 2^{1100220019978} is an apocalyptic number.

1100220019978 is a deficient number, since it is larger than the sum of its proper divisors (552331183190).

1100220019978 is an equidigital number, since it uses as much as digits as its factorization.

1100220019978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740391068.

The product of its (nonzero) digits is 18144, while the sum is 40.

Adding to 1100220019978 its reverse (8799100220011), we get a palindrome (9899320239989).

The spelling of 1100220019978 in words is "one trillion, one hundred billion, two hundred twenty million, nineteen thousand, nine hundred seventy-eight".