21002214029 has 2 divisors, whose sum is σ = 21002214030. Its totient is φ = 21002214028.

The previous prime is 21002213993. The next prime is 21002214049. The reversal of 21002214029 is 92041220012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13899938404 + 7102275625 = 117898^2 + 84275^2 .

It is a cyclic number.

It is not a de Polignac number, because 21002214029 - 2⁸ = 21002213773 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21002213995 and 21002214013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21002214049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10501107014 + 10501107015.

It is an arithmetic number, because the mean of its divisors is an integer number (10501107015).

Almost surely, 2^21002214029 is an apocalyptic number.

It is an amenable number.

21002214029 is a deficient number, since it is larger than the sum of its proper divisors (1).

21002214029 is an equidigital number, since it uses as much as digits as its factorization.

21002214029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

The spelling of 21002214029 in words is "twenty-one billion, two million, two hundred fourteen thousand, twenty-nine".