221234413249 has 2 divisors, whose sum is σ = 221234413250. Its totient is φ = 221234413248.

The previous prime is 221234413217. The next prime is 221234413271. The reversal of 221234413249 is 942314432122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146235113649 + 74999299600 = 382407^2 + 273860^2 .

It is a cyclic number.

It is not a de Polignac number, because 221234413249 - 2⁵ = 221234413217 is a prime.

It is not a weakly prime, because it can be changed into another prime (221234413849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110617206624 + 110617206625.

It is an arithmetic number, because the mean of its divisors is an integer number (110617206625).

Almost surely, 2^221234413249 is an apocalyptic number.

It is an amenable number.

221234413249 is a deficient number, since it is larger than the sum of its proper divisors (1).

221234413249 is an equidigital number, since it uses as much as digits as its factorization.

221234413249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 37.

The spelling of 221234413249 in words is "two hundred twenty-one billion, two hundred thirty-four million, four hundred thirteen thousand, two hundred forty-nine".