4021221012233 has 4 divisors (see below), whose sum is σ = 4021236107028. Its totient is φ = 4021205917440.

The previous prime is 4021221012217. The next prime is 4021221012253. The reversal of 4021221012233 is 3322101221204.

4021221012233 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2147640423289 + 1873580588944 = 1465483^2 + 1368788^2 .

It is a cyclic number.

It is not a de Polignac number, because 4021221012233 - 2⁴ = 4021221012217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4021221012199 and 4021221012208.

It is not an unprimeable number, because it can be changed into a prime (4021221012253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7140488 + ... + 7683033.

It is an arithmetic number, because the mean of its divisors is an integer number (1005309026757).

Almost surely, 2^{4021221012233} is an apocalyptic number.

It is an amenable number.

4021221012233 is a deficient number, since it is larger than the sum of its proper divisors (15094795).

4021221012233 is a wasteful number, since it uses less digits than its factorization.

4021221012233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15094794.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 4021221012233 its reverse (3322101221204), we get a palindrome (7343322233437).

The spelling of 4021221012233 in words is "four trillion, twenty-one billion, two hundred twenty-one million, twelve thousand, two hundred thirty-three".