4021221034242 has 12 divisors (see below), whose sum is σ = 8712645574230. Its totient is φ = 1340407011408.

The previous prime is 4021221034217. The next prime is 4021221034249. The reversal of 4021221034242 is 2424301221204.

It is a happy number.

4021221034242 is a `hidden beast` number, since 4 + 0 + 21 + 2 + 210 + 3 + 424 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3780150836121 + 241070198121 = 1944261^2 + 490989^2 .

It is not an unprimeable number, because it can be changed into a prime (4021221034249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111700584267 + ... + 111700584302.

Almost surely, 2^{4021221034242} is an apocalyptic number.

4021221034242 is an abundant number, since it is smaller than the sum of its proper divisors (4691424539988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4021221034242 is a wasteful number, since it uses less digits than its factorization.

4021221034242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223401168577 (or 223401168574 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 4021221034242 its reverse (2424301221204), we get a palindrome (6445522255446).

The spelling of 4021221034242 in words is "four trillion, twenty-one billion, two hundred twenty-one million, thirty-four thousand, two hundred forty-two".