21112012222141 has 2 divisors, whose sum is σ = 21112012222142. Its totient is φ = 21112012222140.

The previous prime is 21112012222127. The next prime is 21112012222153. The reversal of 21112012222141 is 14122221021112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17658190687225 + 3453821534916 = 4202165^2 + 1858446^2 .

It is a cyclic number.

It is not a de Polignac number, because 21112012222141 - 2²⁵ = 21111978667709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21112012222541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10556006111070 + 10556006111071.

It is an arithmetic number, because the mean of its divisors is an integer number (10556006111071).

Almost surely, 2^{21112012222141} is an apocalyptic number.

It is an amenable number.

21112012222141 is a deficient number, since it is larger than the sum of its proper divisors (1).

21112012222141 is an equidigital number, since it uses as much as digits as its factorization.

21112012222141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 21112012222141 its reverse (14122221021112), we get a palindrome (35234233243253).

The spelling of 21112012222141 in words is "twenty-one trillion, one hundred twelve billion, twelve million, two hundred twenty-two thousand, one hundred forty-one".