1221124305422 has 32 divisors (see below), whose sum is σ = 2150729822208. Its totient is φ = 509006003616.

The previous prime is 1221124305421. The next prime is 1221124305433. The reversal of 1221124305422 is 2245034211221.

It is a super-2 number, since 2×1221124305422² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221124305421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 966803 + ... + 1837649.

It is an arithmetic number, because the mean of its divisors is an integer number (67210306944).

Almost surely, 2^{1221124305422} is an apocalyptic number.

1221124305422 is a deficient number, since it is larger than the sum of its proper divisors (929605516786).

1221124305422 is a wasteful number, since it uses less digits than its factorization.

1221124305422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 873600.

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 1221124305422 its reverse (2245034211221), we get a palindrome (3466158516643).

The spelling of 1221124305422 in words is "one trillion, two hundred twenty-one billion, one hundred twenty-four million, three hundred five thousand, four hundred twenty-two".