222121120221943 has 2 divisors, whose sum is σ = 222121120221944. Its totient is φ = 222121120221942.

The previous prime is 222121120221877. The next prime is 222121120222039. The reversal of 222121120221943 is 349122021121222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 222121120221943 - 2²¹ = 222121118124791 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222121120221899 and 222121120221908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222121120221443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111060560110971 + 111060560110972.

It is an arithmetic number, because the mean of its divisors is an integer number (111060560110972).

Almost surely, 2^{222121120221943} is an apocalyptic number.

222121120221943 is a deficient number, since it is larger than the sum of its proper divisors (1).

222121120221943 is an equidigital number, since it uses as much as digits as its factorization.

222121120221943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 34.

The spelling of 222121120221943 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, one hundred twenty million, two hundred twenty-one thousand, nine hundred forty-three".