1212122688 has 112 divisors (see below), whose sum is σ = 3754794624. Its totient is φ = 337858560.

The previous prime is 1212122683. The next prime is 1212122699. The reversal of 1212122688 is 8862212121.

It is a tau number, because it is divible by the number of its divisors (112).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1212122683) 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, 44106 + ... + 66102.

It is an arithmetic number, because the mean of its divisors is an integer number (33524952).

Almost surely, 2^1212122688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212122688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1877397312).

1212122688 is an abundant number, since it is smaller than the sum of its proper divisors (2542671936).

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

1212122688 is a wasteful number, since it uses less digits than its factorization.

1212122688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22060 (or 22050 counting only the distinct ones).

The product of its digits is 6144, while the sum is 33.

The square root of 1212122688 is about 34815.5523868285. The cubic root of 1212122688 is about 1066.2249970063.

The spelling of 1212122688 in words is "one billion, two hundred twelve million, one hundred twenty-two thousand, six hundred eighty-eight".