21010125341 has 2 divisors, whose sum is σ = 21010125342. Its totient is φ = 21010125340.

The previous prime is 21010125319. The next prime is 21010125347. The reversal of 21010125341 is 14352101012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12314562841 + 8695562500 = 110971^2 + 93250^2 .

It is a cyclic number.

It is not a de Polignac number, because 21010125341 - 2¹⁸ = 21009863197 is a prime.

It is a super-3 number, since 3×21010125341³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21010125347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10505062670 + 10505062671.

It is an arithmetic number, because the mean of its divisors is an integer number (10505062671).

Almost surely, 2^21010125341 is an apocalyptic number.

It is an amenable number.

21010125341 is a deficient number, since it is larger than the sum of its proper divisors (1).

21010125341 is an equidigital number, since it uses as much as digits as its factorization.

21010125341 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 21010125341 its reverse (14352101012), we get a palindrome (35362226353).

The spelling of 21010125341 in words is "twenty-one billion, ten million, one hundred twenty-five thousand, three hundred forty-one".