21300002029 has 2 divisors, whose sum is σ = 21300002030. Its totient is φ = 21300002028.

The previous prime is 21300001993. The next prime is 21300002033. The reversal of 21300002029 is 92020000312.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18632796004 + 2667206025 = 136502^2 + 51645^2 .

It is a cyclic number.

It is not a de Polignac number, because 21300002029 - 2¹³ = 21299993837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21300001997 and 21300002015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21300002069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10650001014 + 10650001015.

It is an arithmetic number, because the mean of its divisors is an integer number (10650001015).

Almost surely, 2^21300002029 is an apocalyptic number.

It is an amenable number.

21300002029 is a deficient number, since it is larger than the sum of its proper divisors (1).

21300002029 is an equidigital number, since it uses as much as digits as its factorization.

21300002029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

The spelling of 21300002029 in words is "twenty-one billion, three hundred million, two thousand, twenty-nine".