1212212002122 has 96 divisors (see below), whose sum is σ = 2929616501760. Its totient is φ = 359100387360.

The previous prime is 1212212002121. The next prime is 1212212002153. The reversal of 1212212002122 is 2212002122121.

It is a happy number.

1212212002122 is a `hidden beast` number, since 121 + 221 + 200 + 2 + 122 = 666.

It is a super-3 number, since 3×1212212002122³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1212212002095 and 1212212002104.

It is not an unprimeable number, because it can be changed into a prime (1212212002121) by changing a digit.

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, 7918033 + ... + 8069675.

It is an arithmetic number, because the mean of its divisors is an integer number (30516838560).

Almost surely, 2^{1212212002122} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212212002122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1464808250880).

1212212002122 is an abundant number, since it is smaller than the sum of its proper divisors (1717404499638).

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

1212212002122 is a wasteful number, since it uses less digits than its factorization.

1212212002122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152568 (or 152565 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1212212002122 its reverse (2212002122121), we get a palindrome (3424214124243).

It can be divided in two parts, 121 and 2212002122, that multiplied together give a palindrome (267652256762).

The spelling of 1212212002122 in words is "one trillion, two hundred twelve billion, two hundred twelve million, two thousand, one hundred twenty-two".