221200120091927 has 2 divisors, whose sum is σ = 221200120091928. Its totient is φ = 221200120091926.

The previous prime is 221200120091879. The next prime is 221200120091947. The reversal of 221200120091927 is 729190021002122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221200120091927 - 2¹⁸ = 221200119829783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221200120091947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110600060045963 + 110600060045964.

It is an arithmetic number, because the mean of its divisors is an integer number (110600060045964).

Almost surely, 2^{221200120091927} is an apocalyptic number.

221200120091927 is a deficient number, since it is larger than the sum of its proper divisors (1).

221200120091927 is an equidigital number, since it uses as much as digits as its factorization.

221200120091927 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 38.

The spelling of 221200120091927 in words is "two hundred twenty-one trillion, two hundred billion, one hundred twenty million, ninety-one thousand, nine hundred twenty-seven".