21010012202141 has 2 divisors, whose sum is σ = 21010012202142. Its totient is φ = 21010012202140.

The previous prime is 21010012202111. The next prime is 21010012202143. The reversal of 21010012202141 is 14120221001012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12166353280900 + 8843658921241 = 3488030^2 + 2973829^2 .

It is a cyclic number.

It is not a de Polignac number, because 21010012202141 - 2¹⁸ = 21010011939997 is a prime.

It is a super-2 number, since 2×21010012202141² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 21010012202143, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21010012202143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10505006101070 + 10505006101071.

It is an arithmetic number, because the mean of its divisors is an integer number (10505006101071).

Almost surely, 2^{21010012202141} is an apocalyptic number.

It is an amenable number.

21010012202141 is a deficient number, since it is larger than the sum of its proper divisors (1).

21010012202141 is an equidigital number, since it uses as much as digits as its factorization.

21010012202141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21010012202141 its reverse (14120221001012), we get a palindrome (35130233203153).

The spelling of 21010012202141 in words is "twenty-one trillion, ten billion, twelve million, two hundred two thousand, one hundred forty-one".