21760127 has 2 divisors, whose sum is σ = 21760128. Its totient is φ = 21760126.

The previous prime is 21760099. The next prime is 21760133. The reversal of 21760127 is 72106712.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21760127 is a prime.

It is a super-2 number, since 2×21760127² = 947006254112258, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 21760096 and 21760105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21760177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10880063 + 10880064.

It is an arithmetic number, because the mean of its divisors is an integer number (10880064).

Almost surely, 2^21760127 is an apocalyptic number.

21760127 is a deficient number, since it is larger than the sum of its proper divisors (1).

21760127 is an equidigital number, since it uses as much as digits as its factorization.

21760127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 21760127 is about 4664.7751285566. The cubic root of 21760127 is about 279.1818250129.

Adding to 21760127 its reverse (72106712), we get a palindrome (93866839).

The spelling of 21760127 in words is "twenty-one million, seven hundred sixty thousand, one hundred twenty-seven".