4021221011442 has 32 divisors (see below), whose sum is σ = 8319967418880. Its totient is φ = 1294154991360.

The previous prime is 4021221011399. The next prime is 4021221011503. The reversal of 4021221011442 is 2441101221204.

It is a happy number.

It is an unprimeable number.

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, 7634842 + ... + 8144522.

It is an arithmetic number, because the mean of its divisors is an integer number (259998981840).

Almost surely, 2^{4021221011442} is an apocalyptic number.

4021221011442 is an abundant number, since it is smaller than the sum of its proper divisors (4298746407438).

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

4021221011442 is a wasteful number, since it uses less digits than its factorization.

4021221011442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555058.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 4021221011442 its reverse (2441101221204), we get a palindrome (6462322232646).

The spelling of 4021221011442 in words is "four trillion, twenty-one billion, two hundred twenty-one million, eleven thousand, four hundred forty-two".