4021221012422 has 64 divisors (see below), whose sum is σ = 6324398668224. Its totient is φ = 1916261867520.

The previous prime is 4021221012383. The next prime is 4021221012427. The reversal of 4021221012422 is 2242101221204.

4021221012422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021221012427) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 193568828 + ... + 193589600.

It is an arithmetic number, because the mean of its divisors is an integer number (98818729191).

Almost surely, 2^{4021221012422} is an apocalyptic number.

4021221012422 is a deficient number, since it is larger than the sum of its proper divisors (2303177655802).

4021221012422 is a wasteful number, since it uses less digits than its factorization.

4021221012422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21273.

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

Adding to 4021221012422 its reverse (2242101221204), we get a palindrome (6263322233626).

The spelling of 4021221012422 in words is "four trillion, twenty-one billion, two hundred twenty-one million, twelve thousand, four hundred twenty-two".