21141302243 has 2 divisors, whose sum is σ = 21141302244. Its totient is φ = 21141302242.

The previous prime is 21141302233. The next prime is 21141302257. The reversal of 21141302243 is 34220314112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21141302243 - 2¹⁶ = 21141236707 is a prime.

It is not a weakly prime, because it can be changed into another prime (21141302233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10570651121 + 10570651122.

It is an arithmetic number, because the mean of its divisors is an integer number (10570651122).

Almost surely, 2^21141302243 is an apocalyptic number.

21141302243 is a deficient number, since it is larger than the sum of its proper divisors (1).

21141302243 is an equidigital number, since it uses as much as digits as its factorization.

21141302243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 21141302243 its reverse (34220314112), we get a palindrome (55361616355).

The spelling of 21141302243 in words is "twenty-one billion, one hundred forty-one million, three hundred two thousand, two hundred forty-three".