21300221141 has 2 divisors, whose sum is σ = 21300221142. Its totient is φ = 21300221140.

The previous prime is 21300221101. The next prime is 21300221147. The reversal of 21300221141 is 14112200312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19473086116 + 1827135025 = 139546^2 + 42745^2 .

It is a cyclic number.

It is not a de Polignac number, because 21300221141 - 2³⁴ = 4120351957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21300221147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10650110570 + 10650110571.

It is an arithmetic number, because the mean of its divisors is an integer number (10650110571).

Almost surely, 2^21300221141 is an apocalyptic number.

It is an amenable number.

21300221141 is a deficient number, since it is larger than the sum of its proper divisors (1).

21300221141 is an equidigital number, since it uses as much as digits as its factorization.

21300221141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21300221141 its reverse (14112200312), we get a palindrome (35412421453).

The spelling of 21300221141 in words is "twenty-one billion, three hundred million, two hundred twenty-one thousand, one hundred forty-one".