4042211222421 has 12 divisors (see below), whose sum is σ = 5838827368140. Its totient is φ = 2694771562560.

The previous prime is 4042211222419. The next prime is 4042211222443. The reversal of 4042211222421 is 1242221122404.

4042211222421 is a `hidden beast` number, since 4 + 0 + 4 + 2 + 2 + 11 + 222 + 421 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 150117502500 + 3892093719921 = 387450^2 + 1972839^2 .

It is not a de Polignac number, because 4042211222421 - 2¹ = 4042211222419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4042211222921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2271360 + ... + 3639161.

It is an arithmetic number, because the mean of its divisors is an integer number (486568947345).

Almost surely, 2^{4042211222421} is an apocalyptic number.

It is an amenable number.

4042211222421 is a deficient number, since it is larger than the sum of its proper divisors (1796616145719).

4042211222421 is a wasteful number, since it uses less digits than its factorization.

4042211222421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5986516 (or 5986513 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 27.

Adding to 4042211222421 its reverse (1242221122404), we get a palindrome (5284432344825).

The spelling of 4042211222421 in words is "four trillion, forty-two billion, two hundred eleven million, two hundred twenty-two thousand, four hundred twenty-one".