2221210210129 has 2 divisors, whose sum is σ = 2221210210130. Its totient is φ = 2221210210128.

The previous prime is 2221210210123. The next prime is 2221210210139. The reversal of 2221210210129 is 9210120121222.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2161935003904 + 59275206225 = 1470352^2 + 243465^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221210210129 - 2⁷ = 2221210210001 is a prime.

It is not a weakly prime, because it can be changed into another prime (2221210210123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110605105064 + 1110605105065.

It is an arithmetic number, because the mean of its divisors is an integer number (1110605105065).

Almost surely, 2^{2221210210129} is an apocalyptic number.

It is an amenable number.

2221210210129 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221210210129 is an equidigital number, since it uses as much as digits as its factorization.

2221210210129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 2221210210129 in words is "two trillion, two hundred twenty-one billion, two hundred ten million, two hundred ten thousand, one hundred twenty-nine".