21100120232141 has 2 divisors, whose sum is σ = 21100120232142. Its totient is φ = 21100120232140.

The previous prime is 21100120232137. The next prime is 21100120232171. The reversal of 21100120232141 is 14123202100112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20213611362025 + 886508870116 = 4495955^2 + 941546^2 .

It is a cyclic number.

It is not a de Polignac number, because 21100120232141 - 2² = 21100120232137 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21100120232171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10550060116070 + 10550060116071.

It is an arithmetic number, because the mean of its divisors is an integer number (10550060116071).

Almost surely, 2^{21100120232141} is an apocalyptic number.

It is an amenable number.

21100120232141 is a deficient number, since it is larger than the sum of its proper divisors (1).

21100120232141 is an equidigital number, since it uses as much as digits as its factorization.

21100120232141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 21100120232141 its reverse (14123202100112), we get a palindrome (35223322332253).

The spelling of 21100120232141 in words is "twenty-one trillion, one hundred billion, one hundred twenty million, two hundred thirty-two thousand, one hundred forty-one".