21313232132147 has 2 divisors, whose sum is σ = 21313232132148. Its totient is φ = 21313232132146.

The previous prime is 21313232132107. The next prime is 21313232132243. The reversal of 21313232132147 is 74123123231312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21313232132147 - 2²⁸ = 21312963696691 is a prime.

It is not a weakly prime, because it can be changed into another prime (21313232132107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10656616066073 + 10656616066074.

It is an arithmetic number, because the mean of its divisors is an integer number (10656616066074).

Almost surely, 2^{21313232132147} is an apocalyptic number.

21313232132147 is a deficient number, since it is larger than the sum of its proper divisors (1).

21313232132147 is an equidigital number, since it uses as much as digits as its factorization.

21313232132147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 35.

Adding to 21313232132147 its reverse (74123123231312), we get a palindrome (95436355363459).

The spelling of 21313232132147 in words is "twenty-one trillion, three hundred thirteen billion, two hundred thirty-two million, one hundred thirty-two thousand, one hundred forty-seven".