1212002118 has 48 divisors (see below), whose sum is σ = 2706618096. Its totient is φ = 391677120.

The previous prime is 1212002117. The next prime is 1212002149. The reversal of 1212002118 is 8112002121.

1212002118 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1212002118.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212002111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 192033 + ... + 198243.

It is an arithmetic number, because the mean of its divisors is an integer number (56387877).

Almost surely, 2^1212002118 is an apocalyptic number.

1212002118 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212002118, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1353309048).

1212002118 is an abundant number, since it is smaller than the sum of its proper divisors (1494615978).

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

1212002118 is a wasteful number, since it uses less digits than its factorization.

1212002118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6549 (or 6546 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

The square root of 1212002118 is about 34813.8207900253. The cubic root of 1212002118 is about 1066.1896433214.

Adding to 1212002118 its reverse (8112002121), we get a palindrome (9324004239).

The spelling of 1212002118 in words is "one billion, two hundred twelve million, two thousand, one hundred eighteen".