21094622141 has 2 divisors, whose sum is σ = 21094622142. Its totient is φ = 21094622140.

The previous prime is 21094622123. The next prime is 21094622161. The reversal of 21094622141 is 14122649012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15157303225 + 5937318916 = 123115^2 + 77054^2 .

It is a cyclic number.

It is not a de Polignac number, because 21094622141 - 2¹⁸ = 21094359997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21094622098 and 21094622107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21094622161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10547311070 + 10547311071.

It is an arithmetic number, because the mean of its divisors is an integer number (10547311071).

Almost surely, 2^21094622141 is an apocalyptic number.

It is an amenable number.

21094622141 is a deficient number, since it is larger than the sum of its proper divisors (1).

21094622141 is an equidigital number, since it uses as much as digits as its factorization.

21094622141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 32.

The spelling of 21094622141 in words is "twenty-one billion, ninety-four million, six hundred twenty-two thousand, one hundred forty-one".