421221242003023 has 64 divisors (see below), whose sum is σ = 539973078220800. Its totient is φ = 319093728445440.

The previous prime is 421221242003017. The next prime is 421221242003057. The reversal of 421221242003023 is 320300242122124.

It is a cyclic number.

It is not a de Polignac number, because 421221242003023 - 2²⁵ = 421221208448591 is a prime.

It is a super-2 number, since 2×421221242003023² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 421221242002982 and 421221242003000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421221242003123) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 584410258 + ... + 585130576.

It is an arithmetic number, because the mean of its divisors is an integer number (8437079347200).

Almost surely, 2^{421221242003023} is an apocalyptic number.

421221242003023 is a deficient number, since it is larger than the sum of its proper divisors (118751836217777).

421221242003023 is a wasteful number, since it uses less digits than its factorization.

421221242003023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721820.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 421221242003023 its reverse (320300242122124), we get a palindrome (741521484125147).

The spelling of 421221242003023 in words is "four hundred twenty-one trillion, two hundred twenty-one billion, two hundred forty-two million, three thousand, twenty-three".