1212121122 has 8 divisors (see below), whose sum is σ = 2424242256. Its totient is φ = 404040372.

The previous prime is 1212121121. The next prime is 1212121129. The reversal of 1212121122 is 2211212121.

It is a sphenic number, since it is the product of 3 distinct primes.

1212121122 is an admirable number.

It is a super-2 number, since 2×1212121122² = 2938475228797077768, which contains 22 as substring.

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 (1212121121) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 101010088 + ... + 101010099.

It is an arithmetic number, because the mean of its divisors is an integer number (303030282).

Almost surely, 2^1212121122 is an apocalyptic number.

1212121122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1212121122 is a wasteful number, since it uses less digits than its factorization.

1212121122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202020192.

The product of its digits is 32, while the sum is 15.

The square root of 1212121122 is about 34815.5298968722. The cubic root of 1212121122 is about 1066.2245378368.

Adding to 1212121122 its reverse (2211212121), we get a palindrome (3423333243).

Subtracting 1212121122 from its reverse (2211212121), we obtain a palindrome (999090999).

The spelling of 1212121122 in words is "one billion, two hundred twelve million, one hundred twenty-one thousand, one hundred twenty-two".