1212321122 has 16 divisors (see below), whose sum is σ = 1898838720. Its totient is φ = 579410832.

The previous prime is 1212321113. The next prime is 1212321193. The reversal of 1212321122 is 2211232121.

It is a self number, because there is not a number n which added to its sum of digits gives 1212321122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66029 + ... + 82367.

It is an arithmetic number, because the mean of its divisors is an integer number (118677420).

Almost surely, 2^1212321122 is an apocalyptic number.

1212321122 is a deficient number, since it is larger than the sum of its proper divisors (686517598).

1212321122 is a wasteful number, since it uses less digits than its factorization.

1212321122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17977.

The product of its digits is 96, while the sum is 17.

The square root of 1212321122 is about 34818.4020598304. The cubic root of 1212321122 is about 1066.2831769657.

Adding to 1212321122 its reverse (2211232121), we get a palindrome (3423553243).

The spelling of 1212321122 in words is "one billion, two hundred twelve million, three hundred twenty-one thousand, one hundred twenty-two".