1212201120966 has 128 divisors (see below), whose sum is σ = 2764863728640. Its totient is φ = 350931571200.

The previous prime is 1212201120929. The next prime is 1212201120967. The reversal of 1212201120966 is 6690211022121.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212201120967) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 381073896 + ... + 381077076.

It is an arithmetic number, because the mean of its divisors is an integer number (21600497880).

Almost surely, 2^{1212201120966} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212201120966, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1382431864320).

1212201120966 is an abundant number, since it is smaller than the sum of its proper divisors (1552662607674).

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

1212201120966 is a wasteful number, since it uses less digits than its factorization.

1212201120966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5262.

The product of its (nonzero) digits is 5184, while the sum is 33.

The spelling of 1212201120966 in words is "one trillion, two hundred twelve billion, two hundred one million, one hundred twenty thousand, nine hundred sixty-six".