1221033310442 has 16 divisors (see below), whose sum is σ = 2031919840800. Its totient is φ = 545608104240.

The previous prime is 1221033310339. The next prime is 1221033310459. The reversal of 1221033310442 is 2440133301221.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 470350517 + ... + 470353112.

It is an arithmetic number, because the mean of its divisors is an integer number (126994990050).

Almost surely, 2^{1221033310442} is an apocalyptic number.

1221033310442 is a deficient number, since it is larger than the sum of its proper divisors (810886530358).

1221033310442 is a wasteful number, since it uses less digits than its factorization.

1221033310442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940703701.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 1221033310442 its reverse (2440133301221), we get a palindrome (3661166611663).

The spelling of 1221033310442 in words is "one trillion, two hundred twenty-one billion, thirty-three million, three hundred ten thousand, four hundred forty-two".