21302202202147 has 2 divisors, whose sum is σ = 21302202202148. Its totient is φ = 21302202202146.

The previous prime is 21302202202117. The next prime is 21302202202153. The reversal of 21302202202147 is 74120220220312.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21302202202147 - 2²⁷ = 21302067984419 is a prime.

It is a super-2 number, since 2×21302202202147² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21302202202117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10651101101073 + 10651101101074.

It is an arithmetic number, because the mean of its divisors is an integer number (10651101101074).

Almost surely, 2^{21302202202147} is an apocalyptic number.

21302202202147 is a deficient number, since it is larger than the sum of its proper divisors (1).

21302202202147 is an equidigital number, since it uses as much as digits as its factorization.

21302202202147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 28.

Adding to 21302202202147 its reverse (74120220220312), we get a palindrome (95422422422459).

The spelling of 21302202202147 in words is "twenty-one trillion, three hundred two billion, two hundred two million, two hundred two thousand, one hundred forty-seven".