4022012320421 has 4 divisors (see below), whose sum is σ = 4078660381344. Its totient is φ = 3965364259500.

The previous prime is 4022012320399. The next prime is 4022012320429. The reversal of 4022012320421 is 1240232102204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4022012320421 - 2³⁴ = 4004832451237 is a prime.

It is a super-3 number, since 3×4022012320421³ (a number of 39 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4022012320429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28324030355 + ... + 28324030496.

It is an arithmetic number, because the mean of its divisors is an integer number (1019665095336).

Almost surely, 2^{4022012320421} is an apocalyptic number.

It is an amenable number.

4022012320421 is a deficient number, since it is larger than the sum of its proper divisors (56648060923).

4022012320421 is an equidigital number, since it uses as much as digits as its factorization.

4022012320421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56648060922.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 4022012320421 its reverse (1240232102204), we get a palindrome (5262244422625).

The spelling of 4022012320421 in words is "four trillion, twenty-two billion, twelve million, three hundred twenty thousand, four hundred twenty-one".