221102200129 has 2 divisors, whose sum is σ = 221102200130. Its totient is φ = 221102200128.

The previous prime is 221102200117. The next prime is 221102200153. The reversal of 221102200129 is 921002201122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139671870529 + 81430329600 = 373727^2 + 285360^2 .

It is a cyclic number.

It is not a de Polignac number, because 221102200129 - 2²⁹ = 220565329217 is a prime.

It is not a weakly prime, because it can be changed into another prime (221102200159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110551100064 + 110551100065.

It is an arithmetic number, because the mean of its divisors is an integer number (110551100065).

Almost surely, 2^221102200129 is an apocalyptic number.

It is an amenable number.

221102200129 is a deficient number, since it is larger than the sum of its proper divisors (1).

221102200129 is an equidigital number, since it uses as much as digits as its factorization.

221102200129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 221102200129 in words is "two hundred twenty-one billion, one hundred two million, two hundred thousand, one hundred twenty-nine".