1212118264 has 16 divisors (see below), whose sum is σ = 2597396400. Its totient is φ = 519479232.

The previous prime is 1212118217. The next prime is 1212118267. The reversal of 1212118264 is 4628112121.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212118267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10822429 + ... + 10822540.

It is an arithmetic number, because the mean of its divisors is an integer number (162337275).

Almost surely, 2^1212118264 is an apocalyptic number.

1212118264 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1212118264 is an abundant number, since it is smaller than the sum of its proper divisors (1385278136).

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

1212118264 is a wasteful number, since it uses less digits than its factorization.

1212118264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21644982 (or 21644978 counting only the distinct ones).

The product of its digits is 1536, while the sum is 28.

The square root of 1212118264 is about 34815.4888519463. The cubic root of 1212118264 is about 1066.2236998369.

The spelling of 1212118264 in words is "one billion, two hundred twelve million, one hundred eighteen thousand, two hundred sixty-four".