21213310032151 has 2 divisors, whose sum is σ = 21213310032152. Its totient is φ = 21213310032150.

The previous prime is 21213310032071. The next prime is 21213310032163. The reversal of 21213310032151 is 15123001331212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21213310032151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21213310032181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10606655016075 + 10606655016076.

It is an arithmetic number, because the mean of its divisors is an integer number (10606655016076).

Almost surely, 2^{21213310032151} is an apocalyptic number.

21213310032151 is a deficient number, since it is larger than the sum of its proper divisors (1).

21213310032151 is an equidigital number, since it uses as much as digits as its factorization.

21213310032151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 25.

Adding to 21213310032151 its reverse (15123001331212), we get a palindrome (36336311363363).

The spelling of 21213310032151 in words is "twenty-one trillion, two hundred thirteen billion, three hundred ten million, thirty-two thousand, one hundred fifty-one".