221200120099993 has 2 divisors, whose sum is σ = 221200120099994. Its totient is φ = 221200120099992.

The previous prime is 221200120099949. The next prime is 221200120100107. The reversal of 221200120099993 is 399990021002122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 218520177575184 + 2679942524809 = 14782428^2 + 1637053^2 .

It is a cyclic number.

It is not a de Polignac number, because 221200120099993 - 2¹⁷ = 221200119968921 is a prime.

It is not a weakly prime, because it can be changed into another prime (221200123099993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110600060049996 + 110600060049997.

It is an arithmetic number, because the mean of its divisors is an integer number (110600060049997).

Almost surely, 2^{221200120099993} is an apocalyptic number.

It is an amenable number.

221200120099993 is a deficient number, since it is larger than the sum of its proper divisors (1).

221200120099993 is an equidigital number, since it uses as much as digits as its factorization.

221200120099993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 314928, while the sum is 49.

The spelling of 221200120099993 in words is "two hundred twenty-one trillion, two hundred billion, one hundred twenty million, ninety-nine thousand, nine hundred ninety-three".