2021201423 has 2 divisors, whose sum is σ = 2021201424. Its totient is φ = 2021201422.

The previous prime is 2021201393. The next prime is 2021201471. The reversal of 2021201423 is 3241021202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2021201423 - 2¹⁰ = 2021200399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2021201123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010600711 + 1010600712.

It is an arithmetic number, because the mean of its divisors is an integer number (1010600712).

Almost surely, 2^2021201423 is an apocalyptic number.

2021201423 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021201423 is an equidigital number, since it uses as much as digits as its factorization.

2021201423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2021201423 is about 44957.7737771790. The cubic root of 2021201423 is about 1264.3574302208.

Adding to 2021201423 its reverse (3241021202), we get a palindrome (5262222625).

The spelling of 2021201423 in words is "two billion, twenty-one million, two hundred one thousand, four hundred twenty-three".