1222210144 has 12 divisors (see below), whose sum is σ = 2406226284. Its totient is φ = 611105056.

The previous prime is 1222210127. The next prime is 1222210151. The reversal of 1222210144 is 4410122221.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 19097002 + ... + 19097065.

It is an arithmetic number, because the mean of its divisors is an integer number (200518857).

Almost surely, 2^1222210144 is an apocalyptic number.

It is an amenable number.

1222210144 is a deficient number, since it is larger than the sum of its proper divisors (1184016140).

1222210144 is an equidigital number, since it uses as much as digits as its factorization.

1222210144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38194077 (or 38194069 counting only the distinct ones).

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

The square root of 1222210144 is about 34960.1221965828. The cubic root of 1222210144 is about 1069.1745880495.

Adding to 1222210144 its reverse (4410122221), we get a palindrome (5632332365).

It can be divided in two parts, 12222 and 10144, that added together give a triangular number (22366 = T₂₁₁).

The spelling of 1222210144 in words is "one billion, two hundred twenty-two million, two hundred ten thousand, one hundred forty-four".