1003122221042 has 4 divisors (see below), whose sum is σ = 1504683331566. Its totient is φ = 501561110520.

The previous prime is 1003122221033. The next prime is 1003122221047. The reversal of 1003122221042 is 2401222213001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1002743879641 + 378341401 = 1001371^2 + 19451^2 .

It is not an unprimeable number, because it can be changed into a prime (1003122221047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250780555259 + ... + 250780555262.

Almost surely, 2^{1003122221042} is an apocalyptic number.

1003122221042 is a deficient number, since it is larger than the sum of its proper divisors (501561110524).

1003122221042 is an equidigital number, since it uses as much as digits as its factorization.

1003122221042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501561110523.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 1003122221042 its reverse (2401222213001), we get a palindrome (3404344434043).

The spelling of 1003122221042 in words is "one trillion, three billion, one hundred twenty-two million, two hundred twenty-one thousand, forty-two".