2106215005 has 8 divisors (see below), whose sum is σ = 2540160000. Its totient is φ = 1676504016.

The previous prime is 2106215003. The next prime is 2106215057. The reversal of 2106215005 is 5005126012.

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 2106215005 - 2¹ = 2106215003 is a prime.

It is a super-2 number, since 2×2106215005² = 8872283294574300050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2106215003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1057405 + ... + 1059394.

It is an arithmetic number, because the mean of its divisors is an integer number (317520000).

Almost surely, 2^2106215005 is an apocalyptic number.

It is an amenable number.

2106215005 is a deficient number, since it is larger than the sum of its proper divisors (433944995).

2106215005 is a wasteful number, since it uses less digits than its factorization.

2106215005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2117003.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 2106215005 is about 45893.5181153069. The cubic root of 2106215005 is about 1281.8412232995.

The spelling of 2106215005 in words is "two billion, one hundred six million, two hundred fifteen thousand, five".