221211200893 has 2 divisors, whose sum is σ = 221211200894. Its totient is φ = 221211200892.

The previous prime is 221211200891. The next prime is 221211200939. The reversal of 221211200893 is 398002112122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148967437369 + 72243763524 = 385963^2 + 268782^2 .

It is a cyclic number.

It is not a de Polignac number, because 221211200893 - 2¹ = 221211200891 is a prime.

Together with 221211200891, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221211200891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110605600446 + 110605600447.

It is an arithmetic number, because the mean of its divisors is an integer number (110605600447).

Almost surely, 2^221211200893 is an apocalyptic number.

It is an amenable number.

221211200893 is a deficient number, since it is larger than the sum of its proper divisors (1).

221211200893 is an equidigital number, since it uses as much as digits as its factorization.

221211200893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 31.

The spelling of 221211200893 in words is "two hundred twenty-one billion, two hundred eleven million, two hundred thousand, eight hundred ninety-three".