1211112870912 has 704 divisors, whose sum is σ = 4331438899200. Its totient is φ = 330888830976.

The previous prime is 1211112870871. The next prime is 1211112870923. The reversal of 1211112870912 is 2190782111121.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 360555889 + ... + 360559247.

Almost surely, 2^{1211112870912} is an apocalyptic number.

1211112870912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1211112870912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2165719449600).

1211112870912 is an abundant number, since it is smaller than the sum of its proper divisors (3120326028288).

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

1211112870912 is an frugal number, since it uses more digits than its factorization.

1211112870912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3430 (or 3394 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 36.

The spelling of 1211112870912 in words is "one trillion, two hundred eleven billion, one hundred twelve million, eight hundred seventy thousand, nine hundred twelve".