2021421341423 has 32 divisors (see below), whose sum is σ = 2401758777600. Its totient is φ = 1680578323200.

The previous prime is 2021421341383. The next prime is 2021421341437. The reversal of 2021421341423 is 3241431241202.

It is a cyclic number.

It is not a de Polignac number, because 2021421341423 - 2⁸ = 2021421341167 is a prime.

It is a super-2 number, since 2×2021421341423² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021421341623) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34160540 + ... + 34219662.

It is an arithmetic number, because the mean of its divisors is an integer number (75054961800).

Almost surely, 2^{2021421341423} is an apocalyptic number.

2021421341423 is a deficient number, since it is larger than the sum of its proper divisors (380337436177).

2021421341423 is a wasteful number, since it uses less digits than its factorization.

2021421341423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64823.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 2021421341423 its reverse (3241431241202), we get a palindrome (5262852582625).

The spelling of 2021421341423 in words is "two trillion, twenty-one billion, four hundred twenty-one million, three hundred forty-one thousand, four hundred twenty-three".