21141240032351 has 2 divisors, whose sum is σ = 21141240032352. Its totient is φ = 21141240032350.

The previous prime is 21141240032317. The next prime is 21141240032441. The reversal of 21141240032351 is 15323004214112.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21141240032351 - 2³⁸ = 20866362125407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21141240032051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10570620016175 + 10570620016176.

It is an arithmetic number, because the mean of its divisors is an integer number (10570620016176).

Almost surely, 2^{21141240032351} is an apocalyptic number.

21141240032351 is a deficient number, since it is larger than the sum of its proper divisors (1).

21141240032351 is an equidigital number, since it uses as much as digits as its factorization.

21141240032351 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 21141240032351 its reverse (15323004214112), we get a palindrome (36464244246463).

The spelling of 21141240032351 in words is "twenty-one trillion, one hundred forty-one billion, two hundred forty million, thirty-two thousand, three hundred fifty-one".