1121555315140 has 48 divisors (see below), whose sum is σ = 2536520254128. Its totient is φ = 414099707904.

The previous prime is 1121555315137. The next prime is 1121555315141. The reversal of 1121555315140 is 415135551211.

It can be written as a sum of positive squares in 8 ways, for example, as 569872384 + 1120985442756 = 23872^2 + 1058766^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1121555315096 and 1121555315105.

It is not an unprimeable number, because it can be changed into a prime (1121555315141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13184584 + ... + 13269376.

It is an arithmetic number, because the mean of its divisors is an integer number (52844171961).

Almost surely, 2^{1121555315140} is an apocalyptic number.

1121555315140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121555315140 is an abundant number, since it is smaller than the sum of its proper divisors (1414964938988).

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

1121555315140 is a wasteful number, since it uses less digits than its factorization.

1121555315140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135688 (or 135686 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 34.

The spelling of 1121555315140 in words is "one trillion, one hundred twenty-one billion, five hundred fifty-five million, three hundred fifteen thousand, one hundred forty".