1222121242 has 8 divisors (see below), whose sum is σ = 1840852800. Its totient is φ = 608503644.

The previous prime is 1222121237. The next prime is 1222121267. The reversal of 1222121242 is 2421212221.

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1277892 + ... + 1278847.

It is an arithmetic number, because the mean of its divisors is an integer number (230106600).

Almost surely, 2^1222121242 is an apocalyptic number.

1222121242 is a deficient number, since it is larger than the sum of its proper divisors (618731558).

1222121242 is a wasteful number, since it uses less digits than its factorization.

1222121242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2556980.

The product of its digits is 256, while the sum is 19.

The square root of 1222121242 is about 34958.8506962114. The cubic root of 1222121242 is about 1069.1486639577.

Adding to 1222121242 its reverse (2421212221), we get a palindrome (3643333463).

The spelling of 1222121242 in words is "one billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred forty-two".