21222210210029 has 2 divisors, whose sum is σ = 21222210210030. Its totient is φ = 21222210210028.

The previous prime is 21222210210017. The next prime is 21222210210139. The reversal of 21222210210029 is 92001201222212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14033789668900 + 7188420541129 = 3746170^2 + 2681123^2 .

It is a cyclic number.

It is not a de Polignac number, because 21222210210029 - 2⁴ = 21222210210013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21222210215029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611105105014 + 10611105105015.

It is an arithmetic number, because the mean of its divisors is an integer number (10611105105015).

Almost surely, 2^{21222210210029} is an apocalyptic number.

It is an amenable number.

21222210210029 is a deficient number, since it is larger than the sum of its proper divisors (1).

21222210210029 is an equidigital number, since it uses as much as digits as its factorization.

21222210210029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

The spelling of 21222210210029 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred ten million, two hundred ten thousand, twenty-nine".