21012231341 has 2 divisors, whose sum is σ = 21012231342. Its totient is φ = 21012231340.

The previous prime is 21012231301. The next prime is 21012231397. The reversal of 21012231341 is 14313221012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16085595241 + 4926636100 = 126829^2 + 70190^2 .

It is a cyclic number.

It is not a de Polignac number, because 21012231341 - 2¹⁴ = 21012214957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21012231301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10506115670 + 10506115671.

It is an arithmetic number, because the mean of its divisors is an integer number (10506115671).

Almost surely, 2^21012231341 is an apocalyptic number.

It is an amenable number.

21012231341 is a deficient number, since it is larger than the sum of its proper divisors (1).

21012231341 is an equidigital number, since it uses as much as digits as its factorization.

21012231341 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21012231341 its reverse (14313221012), we get a palindrome (35325452353).

The spelling of 21012231341 in words is "twenty-one billion, twelve million, two hundred thirty-one thousand, three hundred forty-one".