222139604849 has 2 divisors, whose sum is σ = 222139604850. Its totient is φ = 222139604848.

The previous prime is 222139604723. The next prime is 222139604851. The reversal of 222139604849 is 948406931222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142832596624 + 79307008225 = 377932^2 + 281615^2 .

It is a cyclic number.

It is not a de Polignac number, because 222139604849 - 2⁸ = 222139604593 is a prime.

Together with 222139604851, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 222139604797 and 222139604806.

It is not a weakly prime, because it can be changed into another prime (222139604549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111069802424 + 111069802425.

It is an arithmetic number, because the mean of its divisors is an integer number (111069802425).

Almost surely, 2^222139604849 is an apocalyptic number.

It is an amenable number.

222139604849 is a deficient number, since it is larger than the sum of its proper divisors (1).

222139604849 is an equidigital number, since it uses as much as digits as its factorization.

222139604849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1492992, while the sum is 50.

The spelling of 222139604849 in words is "two hundred twenty-two billion, one hundred thirty-nine million, six hundred four thousand, eight hundred forty-nine".