21160106 has 32 divisors (see below), whose sum is σ = 35691840. Its totient is φ = 9328000.

The previous prime is 21160081. The next prime is 21160123. The reversal of 21160106 is 60106112.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197705 + ... + 197811.

It is an arithmetic number, because the mean of its divisors is an integer number (1115370).

Almost surely, 2^21160106 is an apocalyptic number.

21160106 is a deficient number, since it is larger than the sum of its proper divisors (14531734).

21160106 is a wasteful number, since it uses less digits than its factorization.

21160106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 21160106 is about 4600.0115217247. The cubic root of 21160106 is about 276.5917866418.

Adding to 21160106 its reverse (60106112), we get a palindrome (81266218).

The spelling of 21160106 in words is "twenty-one million, one hundred sixty thousand, one hundred six".