1126121205078 has 24 divisors (see below), whose sum is σ = 2444818935000. Its totient is φ = 374621480064.

The previous prime is 1126121205067. The next prime is 1126121205179. The reversal of 1126121205078 is 8705021216211.

It is a happy number.

1126121205078 is a `hidden beast` number, since 1 + 1 + 2 + 6 + 121 + 20 + 507 + 8 = 666.

It is a super-3 number, since 3×1126121205078³ (a number of 37 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 62678683 + ... + 62696646.

It is an arithmetic number, because the mean of its divisors is an integer number (101867455625).

Almost surely, 2^{1126121205078} is an apocalyptic number.

1126121205078 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1126121205078 is an abundant number, since it is smaller than the sum of its proper divisors (1318697729922).

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

1126121205078 is a wasteful number, since it uses less digits than its factorization.

1126121205078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125375836 (or 125375833 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 36.

The spelling of 1126121205078 in words is "one trillion, one hundred twenty-six billion, one hundred twenty-one million, two hundred five thousand, seventy-eight".