21112220010029 has 2 divisors, whose sum is σ = 21112220010030. Its totient is φ = 21112220010028.

The previous prime is 21112220009989. The next prime is 21112220010071. The reversal of 21112220010029 is 92001002221112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18315960481225 + 2796259528804 = 4279715^2 + 1672202^2 .

It is a cyclic number.

It is not a de Polignac number, because 21112220010029 - 2¹⁶ = 21112219944493 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21112220009986 and 21112220010013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21112220012029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10556110005014 + 10556110005015.

It is an arithmetic number, because the mean of its divisors is an integer number (10556110005015).

Almost surely, 2^{21112220010029} is an apocalyptic number.

It is an amenable number.

21112220010029 is a deficient number, since it is larger than the sum of its proper divisors (1).

21112220010029 is an equidigital number, since it uses as much as digits as its factorization.

21112220010029 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 23.

The spelling of 21112220010029 in words is "twenty-one trillion, one hundred twelve billion, two hundred twenty million, ten thousand, twenty-nine".