21222201202043 has 2 divisors, whose sum is σ = 21222201202044. Its totient is φ = 21222201202042.

The previous prime is 21222201201961. The next prime is 21222201202051. The reversal of 21222201202043 is 34020210222212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21222201202043 - 2¹⁸ = 21222200939899 is a prime.

It is not a weakly prime, because it can be changed into another prime (21222201202343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611100601021 + 10611100601022.

It is an arithmetic number, because the mean of its divisors is an integer number (10611100601022).

Almost surely, 2^{21222201202043} is an apocalyptic number.

21222201202043 is a deficient number, since it is larger than the sum of its proper divisors (1).

21222201202043 is an equidigital number, since it uses as much as digits as its factorization.

21222201202043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 21222201202043 its reverse (34020210222212), we get a palindrome (55242411424255).

The spelling of 21222201202043 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred one million, two hundred two thousand, forty-three".