1212122212 has 24 divisors (see below), whose sum is σ = 2473721600. Its totient is φ = 519480360.

The previous prime is 1212122207. The next prime is 1212122213. The reversal of 1212122212 is 2122212121.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1212122213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 440364 + ... + 443107.

Almost surely, 2^1212122212 is an apocalyptic number.

It is an amenable number.

1212122212 is an abundant number, since it is smaller than the sum of its proper divisors (1261599388).

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

1212122212 is an equidigital number, since it uses as much as digits as its factorization.

1212122212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883496 (or 883480 counting only the distinct ones).

The product of its digits is 64, while the sum is 16.

The square root of 1212122212 is about 34815.5455508024. The cubic root of 1212122212 is about 1066.2248574376.

Adding to 1212122212 its reverse (2122212121), we get a palindrome (3334334333).

It can be divided in two parts, 121 and 2122212, that multiplied together give a palindrome (256787652).

The spelling of 1212122212 in words is "one billion, two hundred twelve million, one hundred twenty-two thousand, two hundred twelve".