21012100210141 has 2 divisors, whose sum is σ = 21012100210142. Its totient is φ = 21012100210140.

The previous prime is 21012100210139. The next prime is 21012100210201. The reversal of 21012100210141 is 14101200121012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13409694705625 + 7602405504516 = 3661925^2 + 2757246^2 .

It is a cyclic number.

It is not a de Polignac number, because 21012100210141 - 2¹ = 21012100210139 is a prime.

Together with 21012100210139, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21012100310141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10506050105070 + 10506050105071.

It is an arithmetic number, because the mean of its divisors is an integer number (10506050105071).

Almost surely, 2^{21012100210141} is an apocalyptic number.

It is an amenable number.

21012100210141 is a deficient number, since it is larger than the sum of its proper divisors (1).

21012100210141 is an equidigital number, since it uses as much as digits as its factorization.

21012100210141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21012100210141 its reverse (14101200121012), we get a palindrome (35113300331153).

The spelling of 21012100210141 in words is "twenty-one trillion, twelve billion, one hundred million, two hundred ten thousand, one hundred forty-one".