21110122141 has 2 divisors, whose sum is σ = 21110122142. Its totient is φ = 21110122140.

The previous prime is 21110122133. The next prime is 21110122183. The reversal of 21110122141 is 14122101112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20579050116 + 531072025 = 143454^2 + 23045^2 .

It is a cyclic number.

It is not a de Polignac number, because 21110122141 - 2³ = 21110122133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21110122841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10555061070 + 10555061071.

It is an arithmetic number, because the mean of its divisors is an integer number (10555061071).

Almost surely, 2^21110122141 is an apocalyptic number.

It is an amenable number.

21110122141 is a deficient number, since it is larger than the sum of its proper divisors (1).

21110122141 is an equidigital number, since it uses as much as digits as its factorization.

21110122141 is an evil number, because the sum of its binary digits is even.

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

Adding to 21110122141 its reverse (14122101112), we get a palindrome (35232223253).

The spelling of 21110122141 in words is "twenty-one billion, one hundred ten million, one hundred twenty-two thousand, one hundred forty-one".