1100212119978 has 16 divisors (see below), whose sum is σ = 2200474093440. Its totient is φ = 366729064416.

The previous prime is 1100212119977. The next prime is 1100212120003. The reversal of 1100212119978 is 8799112120011.

It is not an unprimeable number, because it can be changed into a prime (1100212119977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1787218 + ... + 2322621.

It is an arithmetic number, because the mean of its divisors is an integer number (137529630840).

Almost surely, 2^{1100212119978} is an apocalyptic number.

1100212119978 is an abundant number, since it is smaller than the sum of its proper divisors (1100261973462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1100212119978 is a wasteful number, since it uses less digits than its factorization.

1100212119978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4154461.

The product of its (nonzero) digits is 18144, while the sum is 42.

Adding to 1100212119978 its reverse (8799112120011), we get a palindrome (9899324239989).

The spelling of 1100212119978 in words is "one trillion, one hundred billion, two hundred twelve million, one hundred nineteen thousand, nine hundred seventy-eight".