1212212002194 has 96 divisors (see below), whose sum is σ = 2812488806400. Its totient is φ = 390912253200.

The previous prime is 1212212002181. The next prime is 1212212002207. The reversal of 1212212002194 is 4912002122121.

1212212002194 is a `hidden beast` number, since 1 + 21 + 221 + 200 + 219 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (1212212002181) and next prime (1212212002207).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 55597707 + ... + 55619505.

It is an arithmetic number, because the mean of its divisors is an integer number (29296758400).

Almost surely, 2^{1212212002194} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212212002194, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1406244403200).

1212212002194 is an abundant number, since it is smaller than the sum of its proper divisors (1600276804206).

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

1212212002194 is a wasteful number, since it uses less digits than its factorization.

1212212002194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25538 (or 25526 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The spelling of 1212212002194 in words is "one trillion, two hundred twelve billion, two hundred twelve million, two thousand, one hundred ninety-four".