1212221022 has 8 divisors (see below), whose sum is σ = 2424442056. Its totient is φ = 404073672.

The previous prime is 1212221011. The next prime is 1212221053. The reversal of 1212221022 is 2201222121.

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

1212221022 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1212220992 and 1212221010.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 101018413 + ... + 101018424.

It is an arithmetic number, because the mean of its divisors is an integer number (303055257).

Almost surely, 2^1212221022 is an apocalyptic number.

1212221022 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.

1212221022 is a wasteful number, since it uses less digits than its factorization.

1212221022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202036842.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1212221022 is about 34816.9645718865. The cubic root of 1212221022 is about 1066.2538288879.

Adding to 1212221022 its reverse (2201222121), we get a palindrome (3413443143).

The spelling of 1212221022 in words is "one billion, two hundred twelve million, two hundred twenty-one thousand, twenty-two".