4021021242223 has 4 divisors (see below), whose sum is σ = 4021031885920. Its totient is φ = 4021010598528.

The previous prime is 4021021242209. The next prime is 4021021242241. The reversal of 4021021242223 is 3222421201204.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4021021242223 is a prime.

It is a super-2 number, since 2×4021021242223² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021021242023) 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, 4733490 + ... + 5517967.

It is an arithmetic number, because the mean of its divisors is an integer number (1005257971480).

Almost surely, 2^{4021021242223} is an apocalyptic number.

4021021242223 is a deficient number, since it is larger than the sum of its proper divisors (10643697).

4021021242223 is a wasteful number, since it uses less digits than its factorization.

4021021242223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10643696.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 4021021242223 its reverse (3222421201204), we get a palindrome (7243442443427).

The spelling of 4021021242223 in words is "four trillion, twenty-one billion, twenty-one million, two hundred forty-two thousand, two hundred twenty-three".