221232012839 has 2 divisors, whose sum is σ = 221232012840. Its totient is φ = 221232012838.

The previous prime is 221232012721. The next prime is 221232012863. The reversal of 221232012839 is 938210232122.

221232012839 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221232012839 - 2²⁰ = 221230964263 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221232012799 and 221232012808.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221232092839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110616006419 + 110616006420.

It is an arithmetic number, because the mean of its divisors is an integer number (110616006420).

Almost surely, 2^221232012839 is an apocalyptic number.

221232012839 is a deficient number, since it is larger than the sum of its proper divisors (1).

221232012839 is an equidigital number, since it uses as much as digits as its factorization.

221232012839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 221232012839 in words is "two hundred twenty-one billion, two hundred thirty-two million, twelve thousand, eight hundred thirty-nine".