10220111019978 has 8 divisors (see below), whose sum is σ = 20440222039968. Its totient is φ = 3406703673324.

The previous prime is 10220111019961. The next prime is 10220111019997. The reversal of 10220111019978 is 87991011102201.

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

10220111019978 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 851675918326 + ... + 851675918337.

It is an arithmetic number, because the mean of its divisors is an integer number (2555027754996).

Almost surely, 2^{10220111019978} is an apocalyptic number.

10220111019978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

10220111019978 is a wasteful number, since it uses less digits than its factorization.

10220111019978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1703351836668.

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

The spelling of 10220111019978 in words is "ten trillion, two hundred twenty billion, one hundred eleven million, nineteen thousand, nine hundred seventy-eight".