1121001108978 has 8 divisors (see below), whose sum is σ = 2242002217968. Its totient is φ = 373667036324.

The previous prime is 1121001108977. The next prime is 1121001108979. The reversal of 1121001108978 is 8798011001211.

It is an interprime number because it is at equal distance from previous prime (1121001108977) and next prime (1121001108979).

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

1121001108978 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1121001108977) 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, 93416759076 + ... + 93416759087.

It is an arithmetic number, because the mean of its divisors is an integer number (280250277246).

Almost surely, 2^{1121001108978} is an apocalyptic number.

1121001108978 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.

1121001108978 is a wasteful number, since it uses less digits than its factorization.

1121001108978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186833518168.

The product of its (nonzero) digits is 8064, while the sum is 39.

The spelling of 1121001108978 in words is "one trillion, one hundred twenty-one billion, one million, one hundred eight thousand, nine hundred seventy-eight".