21501550150141 has 2 divisors, whose sum is σ = 21501550150142. Its totient is φ = 21501550150140.

The previous prime is 21501550150127. The next prime is 21501550150183. The reversal of 21501550150141 is 14105105510512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17280358011225 + 4221192138916 = 4156965^2 + 2054554^2 .

It is a cyclic number.

It is not a de Polignac number, because 21501550150141 - 2⁷ = 21501550150013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21501550150741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10750775075070 + 10750775075071.

It is an arithmetic number, because the mean of its divisors is an integer number (10750775075071).

Almost surely, 2^{21501550150141} is an apocalyptic number.

It is an amenable number.

21501550150141 is a deficient number, since it is larger than the sum of its proper divisors (1).

21501550150141 is an equidigital number, since it uses as much as digits as its factorization.

21501550150141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5000, while the sum is 31.

Adding to 21501550150141 its reverse (14105105510512), we get a palindrome (35606655660653).

The spelling of 21501550150141 in words is "twenty-one trillion, five hundred one billion, five hundred fifty million, one hundred fifty thousand, one hundred forty-one".