21127067 has 8 divisors (see below), whose sum is σ = 22838256. Its totient is φ = 19428192.

The previous prime is 21127033. The next prime is 21127081. The reversal of 21127067 is 76072112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21127067 - 2¹² = 21122971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21127097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 668 + ... + 6534.

It is an arithmetic number, because the mean of its divisors is an integer number (2854782).

Almost surely, 2^21127067 is an apocalyptic number.

21127067 is a deficient number, since it is larger than the sum of its proper divisors (1711189).

21127067 is a wasteful number, since it uses less digits than its factorization.

21127067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6157.

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

The square root of 21127067 is about 4596.4189321688. The cubic root of 21127067 is about 276.4477565457.

Adding to 21127067 its reverse (76072112), we get a palindrome (97199179).

The spelling of 21127067 in words is "twenty-one million, one hundred twenty-seven thousand, sixty-seven".