110102121978 has 16 divisors (see below), whose sum is σ = 220214635200. Its totient is φ = 36698975456.

The previous prime is 110102121977. The next prime is 110102122007. The reversal of 110102121978 is 879121201011.

It is not an unprimeable number, because it can be changed into a prime (110102121971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291678 + ... + 552521.

It is an arithmetic number, because the mean of its divisors is an integer number (13763414700).

Almost surely, 2^110102121978 is an apocalyptic number.

110102121978 is an abundant number, since it is smaller than the sum of its proper divisors (110112513222).

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

110102121978 is a wasteful number, since it uses less digits than its factorization.

110102121978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865941.

The product of its (nonzero) digits is 2016, while the sum is 33.

Adding to 110102121978 its reverse (879121201011), we get a palindrome (989223322989).

The spelling of 110102121978 in words is "one hundred ten billion, one hundred two million, one hundred twenty-one thousand, nine hundred seventy-eight".