1221442254334 has 16 divisors (see below), whose sum is σ = 1832884426080. Its totient is φ = 610480834560.

The previous prime is 1221442254317. The next prime is 1221442254349. The reversal of 1221442254334 is 4334522441221.

It is a junction number, because it is equal to n+sod(n) for n = 1221442254293 and 1221442254302.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100433214 + ... + 100445374.

It is an arithmetic number, because the mean of its divisors is an integer number (114555276630).

Almost surely, 2^{1221442254334} is an apocalyptic number.

1221442254334 is a deficient number, since it is larger than the sum of its proper divisors (611442171746).

1221442254334 is a wasteful number, since it uses less digits than its factorization.

1221442254334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27795.

The product of its digits is 184320, while the sum is 37.

Adding to 1221442254334 its reverse (4334522441221), we get a palindrome (5555964695555).

The spelling of 1221442254334 in words is "one trillion, two hundred twenty-one billion, four hundred forty-two million, two hundred fifty-four thousand, three hundred thirty-four".