21202012110029 has 2 divisors, whose sum is σ = 21202012110030. Its totient is φ = 21202012110028.

The previous prime is 21202012110007. The next prime is 21202012110043. The reversal of 21202012110029 is 92001121020212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18633268657129 + 2568743452900 = 4316627^2 + 1602730^2 .

It is a cyclic number.

It is not a de Polignac number, because 21202012110029 - 2²⁰ = 21202011061453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21202012109986 and 21202012110013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21202012110329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10601006055014 + 10601006055015.

It is an arithmetic number, because the mean of its divisors is an integer number (10601006055015).

Almost surely, 2^{21202012110029} is an apocalyptic number.

It is an amenable number.

21202012110029 is a deficient number, since it is larger than the sum of its proper divisors (1).

21202012110029 is an equidigital number, since it uses as much as digits as its factorization.

21202012110029 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 21202012110029 in words is "twenty-one trillion, two hundred two billion, twelve million, one hundred ten thousand, twenty-nine".