1221042103034 has 16 divisors (see below), whose sum is σ = 1972483112040. Its totient is φ = 563549184000.

The previous prime is 1221042103031. The next prime is 1221042103049. The reversal of 1221042103034 is 4303012401221.

It can be written as a sum of positive squares in 4 ways, for example, as 604510915009 + 616531188025 = 777503^2 + 785195^2 .

It is not an unprimeable number, because it can be changed into a prime (1221042103031) by changing a digit.

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, 1540034 + ... + 2194034.

Almost surely, 2^{1221042103034} is an apocalyptic number.

1221042103034 is a deficient number, since it is larger than the sum of its proper divisors (751441009006).

1221042103034 is a wasteful number, since it uses less digits than its factorization.

1221042103034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725825.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 1221042103034 its reverse (4303012401221), we get a palindrome (5524054504255).

The spelling of 1221042103034 in words is "one trillion, two hundred twenty-one billion, forty-two million, one hundred three thousand, thirty-four".