1211442122 has 16 divisors (see below), whose sum is σ = 2001609792. Its totient is φ = 545308320.

The previous prime is 1211442097. The next prime is 1211442161. The reversal of 1211442122 is 2212441121.

It is a super-3 number, since 3×1211442122³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1211442094 and 1211442103.

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 7 ways as a sum of consecutive naturals, for example, 265043 + ... + 269574.

It is an arithmetic number, because the mean of its divisors is an integer number (125100612).

Almost surely, 2^1211442122 is an apocalyptic number.

1211442122 is a deficient number, since it is larger than the sum of its proper divisors (790167670).

1211442122 is a wasteful number, since it uses less digits than its factorization.

1211442122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534733.

The product of its digits is 256, while the sum is 20.

The square root of 1211442122 is about 34805.7771354124. Note that the first 3 decimals coincide. The cubic root of 1211442122 is about 1066.0254098584.

Adding to 1211442122 its reverse (2212441121), we get a palindrome (3423883243).

The spelling of 1211442122 in words is "one billion, two hundred eleven million, four hundred forty-two thousand, one hundred twenty-two".