4221021234023 has 16 divisors (see below), whose sum is σ = 4847559072000. Its totient is φ = 3634989281280.

The previous prime is 4221021233993. The next prime is 4221021234091. The reversal of 4221021234023 is 3204321201224.

It is a cyclic number.

It is not a de Polignac number, because 4221021234023 - 2²² = 4221017039719 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4221021233983 and 4221021234001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4221021234523) by changing a digit.

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, 1308278 + ... + 3186476.

It is an arithmetic number, because the mean of its divisors is an integer number (302972442000).

Almost surely, 2^{4221021234023} is an apocalyptic number.

4221021234023 is a deficient number, since it is larger than the sum of its proper divisors (626537837977).

4221021234023 is a wasteful number, since it uses less digits than its factorization.

4221021234023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1888982.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 4221021234023 its reverse (3204321201224), we get a palindrome (7425342435247).

The spelling of 4221021234023 in words is "four trillion, two hundred twenty-one billion, twenty-one million, two hundred thirty-four thousand, twenty-three".