211421010443 has 2 divisors, whose sum is σ = 211421010444. Its totient is φ = 211421010442.

The previous prime is 211421010439. The next prime is 211421010469. The reversal of 211421010443 is 344010124112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211421010443 - 2² = 211421010439 is a prime.

It is not a weakly prime, because it can be changed into another prime (211421090443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105710505221 + 105710505222.

It is an arithmetic number, because the mean of its divisors is an integer number (105710505222).

Almost surely, 2^211421010443 is an apocalyptic number.

211421010443 is a deficient number, since it is larger than the sum of its proper divisors (1).

211421010443 is an equidigital number, since it uses as much as digits as its factorization.

211421010443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 211421010443 its reverse (344010124112), we get a palindrome (555431134555).

The spelling of 211421010443 in words is "two hundred eleven billion, four hundred twenty-one million, ten thousand, four hundred forty-three".