1121231011986 has 16 divisors (see below), whose sum is σ = 2491624471200. Its totient is φ = 373743670644.

The previous prime is 1121231011897. The next prime is 1121231012003. The reversal of 1121231011986 is 6891101321211.

1121231011986 is a `hidden beast` number, since 11 + 212 + 310 + 119 + 8 + 6 = 666.

It is a super-3 number, since 3×1121231011986³ (a number of 37 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1121231011986.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10381768576 + ... + 10381768683.

It is an arithmetic number, because the mean of its divisors is an integer number (155726529450).

Almost surely, 2^{1121231011986} is an apocalyptic number.

1121231011986 is an abundant number, since it is smaller than the sum of its proper divisors (1370393459214).

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

1121231011986 is a wasteful number, since it uses less digits than its factorization.

1121231011986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20763537270 (or 20763537264 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 36.

The spelling of 1121231011986 in words is "one trillion, one hundred twenty-one billion, two hundred thirty-one million, eleven thousand, nine hundred eighty-six".