221300213297 has 2 divisors, whose sum is σ = 221300213298. Its totient is φ = 221300213296.

The previous prime is 221300213291. The next prime is 221300213311. The reversal of 221300213297 is 792312003122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134572319281 + 86727894016 = 366841^2 + 294496^2 .

It is a cyclic number.

It is not a de Polignac number, because 221300213297 - 2³² = 217005246001 is a prime.

It is a super-2 number, since 2×221300213297² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (221300213291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110650106648 + 110650106649.

It is an arithmetic number, because the mean of its divisors is an integer number (110650106649).

Almost surely, 2^221300213297 is an apocalyptic number.

It is an amenable number.

221300213297 is a deficient number, since it is larger than the sum of its proper divisors (1).

221300213297 is an equidigital number, since it uses as much as digits as its factorization.

221300213297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 32.

The spelling of 221300213297 in words is "two hundred twenty-one billion, three hundred million, two hundred thirteen thousand, two hundred ninety-seven".