2221421023 has 2 divisors, whose sum is σ = 2221421024. Its totient is φ = 2221421022.

The previous prime is 2221421021. The next prime is 2221421039. The reversal of 2221421023 is 3201241222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2221421023 - 2¹ = 2221421021 is a prime.

It is a super-2 number, since 2×2221421023² = 9869422722852733058, which contains 22 as substring.

Together with 2221421021, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221421021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110710511 + 1110710512.

It is an arithmetic number, because the mean of its divisors is an integer number (1110710512).

Almost surely, 2^2221421023 is an apocalyptic number.

2221421023 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221421023 is an equidigital number, since it uses as much as digits as its factorization.

2221421023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 2221421023 is about 47131.9533119518. The cubic root of 2221421023 is about 1304.7990320926.

Adding to 2221421023 its reverse (3201241222), we get a palindrome (5422662245).

The spelling of 2221421023 in words is "two billion, two hundred twenty-one million, four hundred twenty-one thousand, twenty-three".