21411170 has 16 divisors (see below), whose sum is σ = 42043968. Its totient is φ = 7785840.

The previous prime is 21411161. The next prime is 21411199. The reversal of 21411170 is 7111412.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97214 + ... + 97433.

It is an arithmetic number, because the mean of its divisors is an integer number (2627748).

Almost surely, 2^21411170 is an apocalyptic number.

21411170 is a deficient number, since it is larger than the sum of its proper divisors (20632798).

21411170 is a wasteful number, since it uses less digits than its factorization.

21411170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194665.

The product of its (nonzero) digits is 56, while the sum is 17.

The square root of 21411170 is about 4627.2205480180. The cubic root of 21411170 is about 277.6814061541.

Adding to 21411170 its reverse (7111412), we get a palindrome (28522582).

The spelling of 21411170 in words is "twenty-one million, four hundred eleven thousand, one hundred seventy".