1042122402221 has 16 divisors (see below), whose sum is σ = 1088493033600. Its totient is φ = 996453691968.

The previous prime is 1042122402187. The next prime is 1042122402259. The reversal of 1042122402221 is 1222042212401.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1042122402221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042122402281) 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 15 ways as a sum of consecutive naturals, for example, 9593216 + ... + 9701238.

It is an arithmetic number, because the mean of its divisors is an integer number (68030814600).

Almost surely, 2^{1042122402221} is an apocalyptic number.

It is an amenable number.

1042122402221 is a deficient number, since it is larger than the sum of its proper divisors (46370631379).

1042122402221 is a wasteful number, since it uses less digits than its factorization.

1042122402221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111268.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 1042122402221 its reverse (1222042212401), we get a palindrome (2264164614622).

The spelling of 1042122402221 in words is "one trillion, forty-two billion, one hundred twenty-two million, four hundred two thousand, two hundred twenty-one".