221412235924849 has 2 divisors, whose sum is σ = 221412235924850. Its totient is φ = 221412235924848.

The previous prime is 221412235924837. The next prime is 221412235924889. The reversal of 221412235924849 is 948429532214122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 220843822464225 + 568413460624 = 14860815^2 + 753932^2 .

It is a cyclic number.

It is not a de Polignac number, because 221412235924849 - 2¹³ = 221412235916657 is a prime.

It is a super-2 number, since 2×221412235924849² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221412235924793 and 221412235924802.

It is not a weakly prime, because it can be changed into another prime (221412235924889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110706117962424 + 110706117962425.

It is an arithmetic number, because the mean of its divisors is an integer number (110706117962425).

Almost surely, 2^{221412235924849} is an apocalyptic number.

It is an amenable number.

221412235924849 is a deficient number, since it is larger than the sum of its proper divisors (1).

221412235924849 is an equidigital number, since it uses as much as digits as its factorization.

221412235924849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19906560, while the sum is 58.

The spelling of 221412235924849 in words is "two hundred twenty-one trillion, four hundred twelve billion, two hundred thirty-five million, nine hundred twenty-four thousand, eight hundred forty-nine".